[arch-commits] Commit in sagemath/repos (16 files)

Antonio Rojas arojas at archlinux.org
Fri Aug 17 22:29:46 UTC 2018


    Date: Friday, August 17, 2018 @ 22:29:46
  Author: arojas
Revision: 372569

archrelease: copy trunk to community-staging-x86_64

Added:
  sagemath/repos/community-staging-x86_64/
  sagemath/repos/community-staging-x86_64/PKGBUILD
    (from rev 372568, sagemath/trunk/PKGBUILD)
  sagemath/repos/community-staging-x86_64/fes02.patch
    (from rev 372568, sagemath/trunk/fes02.patch)
  sagemath/repos/community-staging-x86_64/latte-count.patch
    (from rev 372568, sagemath/trunk/latte-count.patch)
  sagemath/repos/community-staging-x86_64/package.patch
    (from rev 372568, sagemath/trunk/package.patch)
  sagemath/repos/community-staging-x86_64/r-no-readline.patch
    (from rev 372568, sagemath/trunk/r-no-readline.patch)
  sagemath/repos/community-staging-x86_64/sagemath-cremona.patch
    (from rev 372568, sagemath/trunk/sagemath-cremona.patch)
  sagemath/repos/community-staging-x86_64/sagemath-eclib-20180710.patch
    (from rev 372568, sagemath/trunk/sagemath-eclib-20180710.patch)
  sagemath/repos/community-staging-x86_64/sagemath-env.patch
    (from rev 372568, sagemath/trunk/sagemath-env.patch)
  sagemath/repos/community-staging-x86_64/sagemath-gap-4.8.patch
    (from rev 372568, sagemath/trunk/sagemath-gap-4.8.patch)
  sagemath/repos/community-staging-x86_64/sagemath-lcalc-c++11.patch
    (from rev 372568, sagemath/trunk/sagemath-lcalc-c++11.patch)
  sagemath/repos/community-staging-x86_64/sagemath-python3-notebook.patch
    (from rev 372568, sagemath/trunk/sagemath-python3-notebook.patch)
  sagemath/repos/community-staging-x86_64/sagemath-scipy-1.0.patch
    (from rev 372568, sagemath/trunk/sagemath-scipy-1.0.patch)
  sagemath/repos/community-staging-x86_64/sagemath-singular-4.1.1.patch
    (from rev 372568, sagemath/trunk/sagemath-singular-4.1.1.patch)
  sagemath/repos/community-staging-x86_64/sagemath-threejs.patch
    (from rev 372568, sagemath/trunk/sagemath-threejs.patch)
  sagemath/repos/community-staging-x86_64/test-optional.patch
    (from rev 372568, sagemath/trunk/test-optional.patch)

---------------------------------+
 PKGBUILD                        |  174 +++++++
 fes02.patch                     |   57 ++
 latte-count.patch               |   89 +++
 package.patch                   |   39 +
 r-no-readline.patch             |   11 
 sagemath-cremona.patch          |   31 +
 sagemath-eclib-20180710.patch   |   24 +
 sagemath-env.patch              |  172 +++++++
 sagemath-gap-4.8.patch          |   31 +
 sagemath-lcalc-c++11.patch      |   10 
 sagemath-python3-notebook.patch |   27 +
 sagemath-scipy-1.0.patch        |   16 
 sagemath-singular-4.1.1.patch   |  902 ++++++++++++++++++++++++++++++++++++++
 sagemath-threejs.patch          |   11 
 test-optional.patch             |   27 +
 15 files changed, 1621 insertions(+)

Copied: sagemath/repos/community-staging-x86_64/PKGBUILD (from rev 372568, sagemath/trunk/PKGBUILD)
===================================================================
--- community-staging-x86_64/PKGBUILD	                        (rev 0)
+++ community-staging-x86_64/PKGBUILD	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,174 @@
+# Maintainer: Antonio Rojas <arojas at archlinux.org>
+# Contributor: Evgeniy Alekseev <arcanis.arch at gmail dot com>
+# Contributor: Daniel Wallace <danielwallace at gtmanfred dot com>
+# Contributor: Thomas Dziedzic <gostrc at gmail dot com>
+# Contributor: Osman Ugus <ugus11 at yahoo dot com>
+# Contributor: Stefan Husmann <stefan-husmann at t-online dot de>
+
+pkgbase=sagemath
+pkgname=(sagemath sagemath-jupyter)
+pkgver=8.3
+pkgrel=1
+pkgdesc="Open Source Mathematics Software, free alternative to Magma, Maple, Mathematica, and Matlab"
+arch=(x86_64)
+url="http://www.sagemath.org"
+license=(GPL)
+depends=(ipython2 ppl palp brial cliquer maxima-ecl gfan sympow nauty python2-rpy2 python2-fpylll python2-psutil python2-cypari2
+  python2-matplotlib python2-scipy python2-sympy python2-networkx python2-pillow python2-future libgap flintqs lcalc lrcalc arb
+  eclib gmp-ecm zn_poly gd python2-cvxopt pynac linbox rubiks pari-galdata pari-seadata-small planarity rankwidth tachyon
+  sage-data-combinatorial_designs sage-data-elliptic_curves sage-data-graphs sage-data-polytopes_db sage-data-conway_polynomials)
+optdepends=('cython2: to compile cython code' 'python2-pkgconfig: to compile cython code'
+  'jmol: 3D plots' 'sage-notebook: Flask notebook interface (deprecated)'
+  'sagemath-doc: Documentation and inline help' 'python2-igraph: igraph backend for graph theory'
+  'coin-or-cbc: COIN backend for numerical computations' 'coin-or-csdp: for computing Lovász theta-function of graphs'
+  'buckygen: for generating fullerene graphs' 'plantri: for generating some classes of graphs' 'benzene: for generating fusenes and benzenoids'
+  'ffmpeg: to export animations to video' 'imagemagick: to show animations'
+  'coxeter: Coxeter groups implementation' 'cryptominisat5: SAT solver' 'gap-4.8-data: for computing Galois groups'
+  'lrs: Algorithms for linear reverse search used in game theory and for computing volume of polytopes'
+  'libhomfly: for computing the homfly polynomial of links' 'libbraiding: for computing in braid groups'
+  'libfes: exhaustive search of solutions for boolean equations' 'python2-pynormaliz: Normaliz backend for polyhedral computations'
+  'latte-integrale: integral point count in polyhedra' 'polymake: polymake backend for polyhedral computations'
+  'shared_meataxe: faster matrix arithmetic over finite fields' 'openblas: faster linear algebra'
+  'sirocco: for computing the fundamental group of the complement of a plane curve' 'primecount: faster prime_pi implementation'
+  'three.js: alternative 3D plots engine' 'dot2tex: for displaying some diagrams'
+  'python2-pip: to install optional packages with sage -pip')
+makedepends=(cython2 boost ratpoints symmetrica python2-jinja coin-or-cbc libhomfly libbraiding sirocco
+  mcqd coxeter bliss-graphs tdlib python2-pkgconfig shared_meataxe libfes primecount)
+source=("$pkgname-$pkgver.tar.gz::https://github.com/sagemath/sage/archive/$pkgver.tar.gz"
+        sagemath-env.patch
+        package.patch
+        latte-count.patch
+        sagemath-python3-notebook.patch
+        test-optional.patch
+        r-no-readline.patch
+        fes02.patch
+        sagemath-threejs.patch
+        sagemath-cremona.patch
+        sagemath-scipy-1.0.patch
+        sagemath-singular-4.1.1.patch
+        sagemath-lcalc-c++11.patch
+        sagemath-gap-4.8.patch
+        sagemath-cypari2.patch::"https://git.sagemath.org/sage.git/patch?id=da380b32"
+        sagemath-cddlib-0.94j.patch::"https://git.sagemath.org/sage.git/patch?id=af0e6066"
+        sagemath-eclib-20180710.patch)
+sha256sums=('41fd0b4eb820f7a1274e12294b6fbdbbf60d0027bff98c22fdc84da140964929'
+            'f483a448c045aeff186bec4b402da8109fa12547ff36219a9aa427c2561ec8e5'
+            '960afe4fcbffe2762b66119b8f14355386ced0d8ee52b535d0dac1dba90d365b'
+            'ef265f88ceb6caf4aac2d86ea74850861d99a63d11c94fc52b2ce88053c26d1e'
+            'fc393ee5fbf507dfb76d6ad0e9193d74a954acb13f35a371bf91e11bbcb08244'
+            '18edeafb01cc1ed7270c2dfb41a58717918680c98e8eada1858736acd65d92ba'
+            'afd0952b9bb8f52fd428eae36cf719a58ff85a894baae88cbb2124e043768cc7'
+            '7fcb52e96935dccb0f958d37c2f4e3918392480b9af53e08562f6cba6c68cb94'
+            '4722f9257f7b58a5dc8be2e9163ebba6d7b3ee011ff1ab9c0dbfb1330d367261'
+            'f801be68d043f317cc2a85a5ca059010b68eaeafa3bbf5c9148f2c154e2a707d'
+            '17397b8e1843b013ef5d2e083369109f0719651edd8ef0c8493cb49e2bc4324a'
+            '600701ee849d296cef63fad2dbf57db4d6d6259e2e5e1415a7ceaa385d98d5b9'
+            '5114c912f821900e5bfae1e2cfeb7984de946d0b23e1182b0bf15be1d803dfd0'
+            'b2c9b9695c358f868c3868790382cf7d112092184ce08f5733524d406ec20cac'
+            '94847fc033fd36bc59217c8484d4cf48d0640ff35bb5ca5ffba88a8158c6dd44'
+            '9a690bda83c280c0801f6d04353e8a909da80ccfee92e06d200ae6eb9be9a5a8'
+            '182b0765d58494978bf27628bada8b42c95ef7eb2671b91ddf9c67608560c662')
+
+prepare(){
+  cd sage-$pkgver
+
+# Arch-specific patches
+# assume all optional packages are installed
+  patch -p0 -i ../package.patch
+# set env variables
+  patch -p0 -i ../sagemath-env.patch
+# don't list optional packages when running tests
+  patch -p0 -i ../test-optional.patch
+# fix freezes in R interface with readline 7 (Debian)
+  patch -p1 -i ../r-no-readline.patch
+# use correct latte-count binary name
+  patch -p1 -i ../latte-count.patch
+# make 'sage -notebook=jupyter' work with our python3 jupyter-notebook package
+  patch -p1 -i ../sagemath-python3-notebook.patch
+# fix three.js plotting backend
+  patch -p1 -i ../sagemath-threejs.patch
+# remove deprecated scipy parameters
+  patch -p1 -i ../sagemath-scipy-1.0.patch
+# fix build with Singular 4.1.1
+  patch -p1 -i ../sagemath-singular-4.1.1.patch
+# don't force c++98 for lcalc (fixes build with NTL 11)
+  patch -p1 -i ../sagemath-lcalc-c++11.patch
+# Adjust paths for gap-4.8
+  patch -p1 -i ../sagemath-gap-4.8.patch
+# Fix build with eclib 20180710
+  patch -p1 -i ../sagemath-eclib-20180710.patch
+
+# Upstream patches  
+# fix build against libfes 0.2 http://trac.sagemath.org/ticket/15209
+  patch -p1 -i ../fes02.patch
+# use Features to detect Cremona databases https://trac.sagemath.org/ticket/25825
+  patch -p1 -i ../sagemath-cremona.patch
+# update to cypari2 https://trac.sagemath.org/ticket/25813
+  patch -p1 -i ../sagemath-cypari2.patch
+# port to cddlib 0.94j https://trac.sagemath.org/ticket/25344
+  patch -p1 -i ../sagemath-cddlib-0.94j.patch
+
+# use python2
+  sed -e 's|#!/usr/bin/env sage-python23|#!/usr/bin/env python2|' -e 's|#!/usr/bin/env python\b|#!/usr/bin/env python2|' -i src/bin/*
+  sed -e 's|cython {OPT}|cython2 {OPT}|' -e 's|python setup.py|python2 setup.py|' -i src/sage/misc/cython.py
+  sed -e 's|exec ipython\b|exec ipython2|' -e 's|exec pip\b|exec pip2|' -e 's|cygdb|cygdb2|g' -i src/bin/sage
+  sed -e "s|'cython'|'cython2'|" -i src/bin/sage-cython
+}
+
+
+build() {
+  cd sage-$pkgver/src
+
+  export CC=gcc
+  export SAGE_ROOT="$PWD"
+  export SAGE_SRC="$PWD"
+  python2 setup.py build
+}
+
+package_sagemath() {
+  optdepends+=('sagemath-jupyter: Jupyter kernel')
+
+  cd sage-$pkgver/src
+
+  export SAGE_ROOT="$PWD"
+  export SAGE_LOCAL="/usr"
+  export SAGE_EXTCODE="$PWD"/ext
+  python2 setup.py install --root="$pkgdir" --optimize=1
+
+  mkdir -p "$pkgdir"/usr/bin
+  cp bin/sage "$pkgdir"/usr/bin
+  for _i in cachegrind callgrind cleaner coverage coverageall cython env eval grep grepdoc inline-fortran ipynb2rst \
+    ipython massif maxima.lisp native-execute notebook num-threads.py omega open preparse python rst2sws rst2txt run \
+    run-cython runtests startuptime.py sws2rst valgrind version.sh
+  do
+    cp bin/sage-$_i "$pkgdir"/usr/bin
+  done
+  cp bin/math-readline "$pkgdir"/usr/bin
+  
+  mkdir -p "$pkgdir"/usr/share/sage
+  cp -r ext "$pkgdir"/usr/share/sage
+  
+# Remove sage_setup
+  rm -r "$pkgdir"/usr/lib/python2.7/site-packages/sage_setup
+
+# Split jupyter kernel
+  rm -r "$pkgdir"/usr/share/jupyter
+}
+
+package_sagemath-jupyter() {
+  pkgdesc='Jupyter kernel for SageMath'
+  depends=(sagemath python2-jupyter_client python2-ipywidgets mathjax)
+  optdepends=('sage-notebook-exporter: convert flask notebooks to Jupyter')
+
+  cd sage-$pkgver/src
+
+  export SAGE_ROOT="$PWD"
+  export SAGE_LOCAL="/usr"
+
+  python2 -c "from sage.repl.ipython_kernel.install import SageKernelSpec; SageKernelSpec.update(prefix='$pkgdir/usr')"
+# fix symlinks to assets
+  for _i in $(ls ext/notebook-ipython); do
+    rm "$pkgdir"/usr/share/jupyter/kernels/sagemath/$_i
+    ln -s /usr/share/sage/ext/notebook-ipython/$_i "$pkgdir"/usr/share/jupyter/kernels/sagemath/
+  done
+}

Copied: sagemath/repos/community-staging-x86_64/fes02.patch (from rev 372568, sagemath/trunk/fes02.patch)
===================================================================
--- community-staging-x86_64/fes02.patch	                        (rev 0)
+++ community-staging-x86_64/fes02.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,57 @@
+From b1f5e3ecc789db674fe17552812f2d0e2ab84be0 Mon Sep 17 00:00:00 2001
+From: Charles Bouillaguet <charles.bouillaguet at lifl.fr>
+Date: Thu, 19 Sep 2013 10:31:11 +0200
+Subject: updating the libFES binding to match a change in the interface
+
+---
+ src/sage/libs/fes.pyx | 12 +++++++-----
+ 1 file changed, 7 insertions(+), 5 deletions(-)
+
+diff --git a/src/sage/libs/fes.pyx b/src/sage/libs/fes.pyx
+index 40b9c23..d188cf0 100644
+--- a/src/sage/libs/fes.pyx
++++ b/src/sage/libs/fes.pyx
+@@ -1,17 +1,19 @@
+ """
+-Binding for the FES library.
++Binding for the libFES library.
+ 
+ Finding solutions of systems of boolean equations by exhaustive
+ search, via the fes library. This is usually (much) faster than
+ computing a Groebner basis, except in special cases where the latter
+ is particularly easy.
+ 
+-The FES library is presently only able to deal with polynomials in 64
++More information is available at [http://www.lifl.fr/~bouillag/fes].
++
++The libFES library is presently only able to deal with polynomials in 64
+ variables. Performing a full exhaustive search over 64 variables will
+ take a **long** time. The number of variables can be artificially
+ reduced to 64 by specializing some of them.
+ 
+-Note that the FES library **requires** at least of the equations to be
++Note that the libFES library **requires** at least of the equations to be
+ non-linear.
+ 
+ AUTHORS:
+@@ -71,7 +73,7 @@ from libc.stdint cimport uint64_t
+ cdef extern from "fes_interface.h":
+     ctypedef int (*solution_callback_t)(void *, uint64_t)
+ 
+-    void exhaustive_search_wrapper(int n, int n_eqs, int degree, int ***coeffs, solution_callback_t callback, void* callback_state, int verbose)
++    void exhaustive_search_wrapper(int n, int n_eqs, int degree, int ***coeffs, solution_callback_t callback, void* callback_state, int verbose, int T)
+ 
+ 
+ from sage.rings.integer import Integer
+@@ -217,7 +217,7 @@ def exhaustive_search(eqs,  max_sols=Infinity, verbose=False):
+ 
+     # ------- runs the library
+     sig_on()
+-    exhaustive_search_wrapper(n, len(eqs), degree, coeffs, report_solution, <void *> internal_state, verbose)
++    exhaustive_search_wrapper(n, len(eqs), degree, coeffs, report_solution, <void *> internal_state, verbose, 0)
+     sig_off()
+ 
+     # ------- frees memory occupied by the dense representation of the equations
+-- 
+cgit v1.0-1-gd88e
+

Copied: sagemath/repos/community-staging-x86_64/latte-count.patch (from rev 372568, sagemath/trunk/latte-count.patch)
===================================================================
--- community-staging-x86_64/latte-count.patch	                        (rev 0)
+++ community-staging-x86_64/latte-count.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,89 @@
+diff --git a/src/sage/geometry/polyhedron/base_ZZ.py b/src/sage/geometry/polyhedron/base_ZZ.py
+index 268af9db0d..70d41dfa30 100644
+--- a/src/sage/geometry/polyhedron/base_ZZ.py
++++ b/src/sage/geometry/polyhedron/base_ZZ.py
+@@ -171,7 +171,7 @@ class Polyhedron_ZZ(Polyhedron_base):
+             sage: p = P.ehrhart_polynomial(maxdet=5, verbose=True)  # optional - latte_int
+             This is LattE integrale ...
+             ...
+-            Invocation: count --ehrhart-polynomial '--redundancy-check=none' --cdd '--maxdet=5' /dev/stdin
++            Invocation: latte-count --ehrhart-polynomial '--redundancy-check=none' --cdd '--maxdet=5' /dev/stdin
+             ...
+             sage: p    # optional - latte_int
+             1/2*t^2 + 3/2*t + 1
+@@ -179,7 +179,7 @@ class Polyhedron_ZZ(Polyhedron_base):
+             sage: p = P.ehrhart_polynomial(dual=True, verbose=True)  # optional - latte_int
+             This is LattE integrale ...
+             ...
+-            Invocation: count --ehrhart-polynomial '--redundancy-check=none' --cdd --dual /dev/stdin
++            Invocation: latte-count --ehrhart-polynomial '--redundancy-check=none' --cdd --dual /dev/stdin
+             ...
+             sage: p   # optional - latte_int
+             1/2*t^2 + 3/2*t + 1
+@@ -187,7 +187,7 @@ class Polyhedron_ZZ(Polyhedron_base):
+             sage: p = P.ehrhart_polynomial(irrational_primal=True, verbose=True)   # optional - latte_int
+             This is LattE integrale ...
+             ...
+-            Invocation: count --ehrhart-polynomial '--redundancy-check=none' --cdd --irrational-primal /dev/stdin
++            Invocation: latte-count --ehrhart-polynomial '--redundancy-check=none' --cdd --irrational-primal /dev/stdin
+             ...
+             sage: p   # optional - latte_int
+             1/2*t^2 + 3/2*t + 1
+@@ -195,7 +195,7 @@ class Polyhedron_ZZ(Polyhedron_base):
+             sage: p = P.ehrhart_polynomial(irrational_all_primal=True, verbose=True)  # optional - latte_int
+             This is LattE integrale ...
+             ...
+-            Invocation: count --ehrhart-polynomial '--redundancy-check=none' --cdd --irrational-all-primal /dev/stdin
++            Invocation: latte-count --ehrhart-polynomial '--redundancy-check=none' --cdd --irrational-all-primal /dev/stdin
+             ...
+             sage: p   # optional - latte_int
+             1/2*t^2 + 3/2*t + 1
+@@ -207,7 +207,7 @@ class Polyhedron_ZZ(Polyhedron_base):
+             ...
+             RuntimeError: LattE integrale program failed (exit code 1):
+             ...
+-            Invocation: count --ehrhart-polynomial '--redundancy-check=none' --cdd '--bim-bam-boum=19' /dev/stdin
++            Invocation: latte-count --ehrhart-polynomial '--redundancy-check=none' --cdd '--bim-bam-boum=19' /dev/stdin
+             Unknown command/option --bim-bam-boum=19
+         """
+         if self.is_empty():
+diff --git a/src/sage/interfaces/latte.py b/src/sage/interfaces/latte.py
+index 066cedd401..302b39910d 100644
+--- a/src/sage/interfaces/latte.py
++++ b/src/sage/interfaces/latte.py
+@@ -93,7 +93,7 @@ def count(arg, ehrhart_polynomial=False, multivariate_generating_function=False,
+         sage: n = count(cddin, cdd=True, verbose=True, raw_output=True)  # optional - latte_int
+         This is LattE integrale ...
+         ...
+-        Invocation: count '--redundancy-check=none' --cdd /dev/stdin
++        Invocation: latte-count '--redundancy-check=none' --cdd /dev/stdin
+         ...
+         Total Unimodular Cones: ...
+         Maximum number of simplicial cones in memory at once: ...
+@@ -112,7 +112,7 @@ def count(arg, ehrhart_polynomial=False, multivariate_generating_function=False,
+     # Check that LattE is present
+     Latte().require()
+ 
+-    args = ['count']
++    args = ['latte-count']
+     if ehrhart_polynomial and multivariate_generating_function:
+         raise ValueError
+     if ehrhart_polynomial:
+diff --git a/src/sage/features/latte.py b/src/sage/features/latte.py
+index 63d227fd35..040a5cf1f9 100644
+--- a/src/sage/features/latte.py
++++ b/src/sage/features/latte.py
+@@ -10,10 +10,10 @@ from . import Executable, Feature, FeatureTestResult
+ 
+ class Latte_count(Executable):
+     r"""
+-    Feature for the executable ``count`` from the LattE suite.
++    Feature for the executable ``latte-count`` from the LattE suite.
+     """
+     def __init__(self):
+-        Executable.__init__(self, "count", executable="count", spkg="latte_int", url="https://www.math.ucdavis.edu/~latte/software.php")
++        Executable.__init__(self, "latte-count", executable="latte-count", spkg="latte_int", url="https://www.math.ucdavis.edu/~latte/software.php")
+ 
+ class Latte_integrate(Executable):
+     r"""
+

Copied: sagemath/repos/community-staging-x86_64/package.patch (from rev 372568, sagemath/trunk/package.patch)
===================================================================
--- community-staging-x86_64/package.patch	                        (rev 0)
+++ community-staging-x86_64/package.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,39 @@
+--- src/sage/misc/package.py.orig	2014-11-23 15:58:13.000000000 +0100
++++ src/sage/misc/package.py	2015-01-22 20:32:25.651383902 +0100
+@@ -328,7 +328,7 @@
+         Use the framework provided by :mod:`sage.features` to check
+         whether a library is installed and functional.
+     """
+-    return any(p.split('-')[0] == package for p in installed_packages(exclude_pip))
++    return True
+ 
+ def package_versions(package_type, local=False):
+     r"""
+--- src/sage_setup/optional_extension.py.orig  2016-10-19 18:35:10.092577510 +0000
++++ src/sage_setup/optional_extension.py       2016-10-19 18:38:13.514765366 +0000
+@@ -21,8 +21,6 @@
+ from distutils.extension import Extension
+ from sage.misc.package import list_packages
+ 
+-all_packages = list_packages(local=True)
+-
+ 
+ class CythonizeExtension(Extension):
+     """
+@@ -76,15 +74,7 @@
+         condition = kwds.pop("condition")
+     except KeyError:
+         pkg = kwds.pop("package")
+-        from sage.misc.package import is_package_installed
+-        try:
+-            pkginfo = all_packages[pkg]
+-        except KeyError:
+-            # Might be an installed old-style package
+-            condition = is_package_installed(pkg)
+-        else:
+-            condition = (pkginfo["installed_version"] == pkginfo["remote_version"])
+-
++        condition = True
+     if condition:
+         return Extension(*args, **kwds)
+     else:

Copied: sagemath/repos/community-staging-x86_64/r-no-readline.patch (from rev 372568, sagemath/trunk/r-no-readline.patch)
===================================================================
--- community-staging-x86_64/r-no-readline.patch	                        (rev 0)
+++ community-staging-x86_64/r-no-readline.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,11 @@
+--- a/src/sage/interfaces/r.py
++++ b/src/sage/interfaces/r.py
+@@ -332,7 +332,7 @@
+                   prompt = '> ', #default, later comes the change
+ 
+                   # This is the command that starts up your program
+-                  command = "R --vanilla --quiet",
++                  command = "R --no-readline --vanilla --quiet",
+ 
+                   server=server,
+                   server_tmpdir=server_tmpdir,

Copied: sagemath/repos/community-staging-x86_64/sagemath-cremona.patch (from rev 372568, sagemath/trunk/sagemath-cremona.patch)
===================================================================
--- community-staging-x86_64/sagemath-cremona.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-cremona.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,31 @@
+diff --git a/src/sage/databases/cremona.py b/src/sage/databases/cremona.py
+index 3f8dd62..ed5726a 100644
+--- a/src/sage/databases/cremona.py
++++ b/src/sage/databases/cremona.py
+@@ -53,7 +53,7 @@ from sage.misc.prandom import randint
+ 
+ import sage.schemes.elliptic_curves.constructor as elliptic
+ from .sql_db import SQLDatabase, verify_column
+-from sage.misc.package import is_package_installed
++from sage.features.databases import DatabaseCremona
+ from sage.env import SAGE_SHARE
+ from sage.misc.all import walltime
+ 
+@@ -825,7 +825,7 @@ class MiniCremonaDatabase(SQLDatabase):
+             if N < self.largest_conductor():
+                 message = "There is no elliptic curve with label " + label \
+                     + " in the database"
+-            elif is_package_installed('database_cremona_ellcurve'):
++            elif DatabaseCremona().is_present():
+                 message = "There is no elliptic curve with label " + label \
+                     + " in the currently available databases"
+             else:
+@@ -1673,7 +1673,7 @@ def CremonaDatabase(name=None,mini=None,set_global=None):
+     if name is None and not set_global:
+         return _db
+     if set_global and name is None:
+-        if is_package_installed('database_cremona_ellcurve'):
++        if DatabaseCremona().is_present():
+             name = 'cremona'
+         else:
+             name = 'cremona mini'

Copied: sagemath/repos/community-staging-x86_64/sagemath-eclib-20180710.patch (from rev 372568, sagemath/trunk/sagemath-eclib-20180710.patch)
===================================================================
--- community-staging-x86_64/sagemath-eclib-20180710.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-eclib-20180710.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,24 @@
+diff --git a/src/sage/libs/eclib/wrap.cpp b/src/sage/libs/eclib/wrap.cpp
+index 5fd5693b53..d12468faa8 100644
+--- a/src/sage/libs/eclib/wrap.cpp
++++ b/src/sage/libs/eclib/wrap.cpp
+@@ -133,8 +133,8 @@ char* Curvedata_isogeny_class(struct Curvedata* E, int verbose)
+ 
+ 
+ int mw_process(struct Curvedata* curve, struct mw* m,
+-                      const struct bigint* x, const struct bigint* y,
+-                      const struct bigint* z, int sat)
++                      const bigint* x, const bigint* y,
++                      const bigint* z, int sat)
+ {
+   Point P(*curve, *x, *y, *z);
+   if (!P.isvalid())
+@@ -188,7 +188,7 @@ int mw_rank(struct mw* m)
+ }
+ 
+ /* Returns index and unsat long array, which user must deallocate */
+-int mw_saturate(struct mw* m, struct bigint* index, char** unsat,
++int mw_saturate(struct mw* m, bigint* index, char** unsat,
+                        long sat_bd, int odd_primes_only)
+ {
+   vector<long> v;

Copied: sagemath/repos/community-staging-x86_64/sagemath-env.patch (from rev 372568, sagemath/trunk/sagemath-env.patch)
===================================================================
--- community-staging-x86_64/sagemath-env.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-env.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,172 @@
+--- src/bin/sage-env.orig	2015-01-06 10:46:04.469687605 +0100
++++ src/bin/sage-env	2015-01-06 10:49:59.547762019 +0100
+@@ -111,41 +111,7 @@
+ }
+ 
+ 
+-# New value for SAGE_ROOT: either SAGE_ROOT (if given)
+-# or a guessed value based on pwd.
+-if [ -n "$SAGE_ROOT" ]; then
+-    NEW_SAGE_ROOT="$SAGE_ROOT"
+-elif [ -f sage -a -d build ]; then
+-    NEW_SAGE_ROOT="."
+-elif [ -f ../../sage -a -d ../../build ]; then
+-    NEW_SAGE_ROOT="../.."
+-else
+-    # No idea what SAGE_ROOT should be...
+-    echo >&2 "Error: You must set the SAGE_ROOT environment variable or run this"
+-    echo >&2 "script from the SAGE_ROOT or SAGE_ROOT/local/bin/ directory."
+-    return 1
+-fi
+-
+-# Make NEW_SAGE_ROOT absolute
+-NEW_SAGE_ROOT=`cd "$NEW_SAGE_ROOT" && pwd -P`
+-
+-# Sanity check NEW_SAGE_ROOT
+-if [ -f "$NEW_SAGE_ROOT/sage" -a -d "$NEW_SAGE_ROOT/build" ]; then
+-    :
+-else
+-    echo >&2 "Error: SAGE_ROOT is set to a bad value:"
+-    echo >&2 "SAGE_ROOT=$SAGE_ROOT"
+-    echo >&2 "You must correct it or erase it and run this script from the SAGE_ROOT"
+-    echo >&2 "or SAGE_ROOT/local/bin/ directory."
+-    return 1
+-fi
+-
+-# Warn if NEW_SAGE_ROOT does not equal the old SAGE_ROOT
+-if [ "$SAGE_ROOT" != "$NEW_SAGE_ROOT" -a -n "$SAGE_ROOT" ]; then
+-    echo >&2 "Warning: overwriting SAGE_ROOT environment variable:"
+-    echo >&2 "Old SAGE_ROOT=$SAGE_ROOT"
+-    echo >&2 "New SAGE_ROOT=$NEW_SAGE_ROOT"
+-fi
++NEW_SAGE_ROOT="/usr"
+ 
+ 
+ # Don't execute the commands more than once for the same version of
+@@ -174,33 +174,9 @@
+ export SAGE_ENV_SOURCED=$SAGE_ENV_VERSION
+ 
+ export SAGE_ROOT="$NEW_SAGE_ROOT"
++export SAGE_LOCAL='/usr'
++export SAGE_SCRIPTS_DIR='/usr/bin'
+ 
+-
+-# sage-env must know where the Sage's script files are.
+-# Note that SAGE_SCRIPTS_DIR is only used here, so it does not need to
+-# be exported.
+-if [ -z "$SAGE_SCRIPTS_DIR" ]; then
+-    if [ -n "$SAGE_LOCAL" ] && [ -f "$SAGE_LOCAL/bin/sage-env-config" ]; then
+-        SAGE_SCRIPTS_DIR="$SAGE_LOCAL/bin"
+-    elif [ -f "$SAGE_ROOT/src/bin/sage-env-config" ]; then
+-        SAGE_SCRIPTS_DIR="$SAGE_ROOT/src/bin"
+-    else
+-        echo >&2 "Error: You must set either the SAGE_LOCAL or SAGE_SCRIPTS_DIR environment variable to run this"
+-        return 1
+-    fi
+-elif [ ! -f "$SAGE_SCRIPTS_DIR/sage-env-config" ]; then
+-    echo >&2 "Error: SAGE_SCRIPTS_DIR is set to a bad value:"
+-    echo >&2 "SAGE_SCRIPTS_DIR=$SAGE_SCRIPTS_DIR"
+-    echo >&2 "You must correct it or erase it and rerun this script"
+-    return 1
+-fi
+-
+-# Set environment variables (like SAGE_LOCAL) depending on ./configure
+-. "$SAGE_SCRIPTS_DIR/sage-env-config"
+-if [ $? -ne 0 ]; then
+-    echo >&2 "Error: failed to source $SAGE_SCRIPTS_DIR/sage-env-config"
+-    return 1
+-fi
+ 
+ # The compilers are set in order of priority by
+ # 1) environment variables
+@@ -296,8 +296,9 @@
+ export SAGE_SPKG_INST="$SAGE_LOCAL/var/lib/sage/installed"
+ export SAGE_SPKG_SCRIPTS="$SAGE_LOCAL/var/lib/sage/scripts"
+ export SAGE_LOGS="$SAGE_ROOT/logs/pkgs"
+-export SAGE_SRC="$SAGE_ROOT/src"
+-export SAGE_DOC_SRC="$SAGE_SRC/doc"
++export GAP_ROOT_DIR="/usr/lib/gap-4.8"
++export SAGE_SRC="$SAGE_LOCAL/lib/python2.7/site-packages"
++export SAGE_DOC_SRC="$SAGE_SHARE/doc/sage"
+ export SAGE_DOC="$SAGE_SHARE/doc/sage"
+ 
+ if [ -z "${SAGE_ORIG_PATH_SET}" ]; then
+@@ -403,29 +403,8 @@
+     export SAGE_STARTUP_FILE
+ fi
+ 
++export LIBMTX="$DOT_SAGE/meataxe"
++[[ -d $LIBMTX ]] || mkdir -p $LIBMTX # Create meataxe data dir
+-if [ "$PYTHON_EGG_CACHE" = "" ]; then
+-    PYTHON_EGG_CACHE="$DOT_SAGE/.python-eggs"
+-    export PYTHON_EGG_CACHE
+-fi
+-
+-# Set PYTHONUSERBASE to avoid picking up non-Sage versions of
+-# Matplotlib, numpy, etc. See http://trac.sagemath.org/ticket/19612.
+-#
+-# For more history (it used to be PYTHONNOUSERSITE=yes which killed
+-# the ability to do "sage -pip install PACKAGE --user"), see
+-# http://trac.sagemath.org/ticket/14243 and
+-# http://trac.sagemath.org/ticket/18955.
+-
+-if [ "$PYTHONUSERBASE" = "" ]; then
+-    PYTHONUSERBASE="$DOT_SAGE/local"
+-    export PYTHONUSERBASE
+-fi
+-
+-if [ -n "$PYTHONHOME" ]; then
+-    >&2 echo "Warning: PYTHONHOME must not be set when running Sage, clearing env..."
+-    unset PYTHONHOME
+-fi
+-
+ LDFLAGS="-L$SAGE_LOCAL/lib -Wl,-rpath,$SAGE_LOCAL/lib $LDFLAGS"
+ export LDFLAGS
+ 
+@@ -489,8 +489,6 @@
+     fi
+ fi
+
+-export MAXIMA_PREFIX="$SAGE_LOCAL"
+-export MAXIMA_USERDIR="$DOT_SAGE/maxima"
+ 
+ PERL5LIB="$SAGE_LOCAL/lib/perl5:$PERL5LIB" && export PERL5LIB
+ 
+@@ -601,9 +601,6 @@
+     LD_LIBRARY_PATH="$SAGE_LOCAL/bin:$LD_LIBRARY_PATH" && export LD_LIBRARY_PATH
+ fi
+ 
+-# See trac 7186 -- this is needed if ecl is moved
+-ECLDIR="$SAGE_LOCAL/lib/ecl/" && export ECLDIR
+-
+ # Handle parallel building/testing/...
+ # See Trac Ticket #12016
+ # First, figure out the right values for SAGE_NUM_THREADS (default
+--- src/sage/env.py.orig       2017-12-07 19:51:25.554281539 +0000
++++ src/sage/env.py    2017-12-07 19:51:42.787654650 +0000
+@@ -117,13 +117,13 @@
+ _add_variable_or_fallback('LOCAL_IDENTIFIER','$HOSTNAME.%s'%os.getpid())
+ 
+ # bunch of sage directories and files
+-_add_variable_or_fallback('SAGE_ROOT',       None)
+-_add_variable_or_fallback('SAGE_LOCAL',      None)
++_add_variable_or_fallback('SAGE_ROOT',       '')
++_add_variable_or_fallback('SAGE_LOCAL',      '/usr')
+ _add_variable_or_fallback('SAGE_ETC',        opj('$SAGE_LOCAL', 'etc'))
+ _add_variable_or_fallback('SAGE_INC',        opj('$SAGE_LOCAL', 'include'))
+ _add_variable_or_fallback('SAGE_SHARE',      opj('$SAGE_LOCAL', 'share'))
+ 
+-_add_variable_or_fallback('SAGE_SRC',        opj('$SAGE_ROOT', 'src'))
++_add_variable_or_fallback('SAGE_SRC',        opj('$SAGE_LOCAL', 'lib', 'python2.7', 'site-packages'))
+ 
+ try:
+     sitepackages_dirs = site.getsitepackages()
+@@ -164,7 +164,7 @@
+ _add_variable_or_fallback('GRAPHS_DATA_DIR',  opj('$SAGE_SHARE','graphs'))
+ _add_variable_or_fallback('ELLCURVE_DATA_DIR',opj('$SAGE_SHARE','ellcurves'))
+ _add_variable_or_fallback('POLYTOPE_DATA_DIR',opj('$SAGE_SHARE','reflexive_polytopes'))
+-_add_variable_or_fallback('GAP_ROOT_DIR',     opj('$SAGE_LOCAL','gap','latest'))
++_add_variable_or_fallback('GAP_ROOT_DIR',     opj('$SAGE_LOCAL','lib','gap-4.8'))
+ _add_variable_or_fallback('THEBE_DIR',        opj('$SAGE_SHARE','thebe'))
+ 
+ # locate singular shared object

Copied: sagemath/repos/community-staging-x86_64/sagemath-gap-4.8.patch (from rev 372568, sagemath/trunk/sagemath-gap-4.8.patch)
===================================================================
--- community-staging-x86_64/sagemath-gap-4.8.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-gap-4.8.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,31 @@
+diff --git a/src/sage/interfaces/gap.py b/src/sage/interfaces/gap.py
+index 177fc1b6eb..51c67bdd09 100644
+--- a/src/sage/interfaces/gap.py
++++ b/src/sage/interfaces/gap.py
+@@ -197,11 +197,11 @@ import string
+ 
+ WORKSPACE = gap_workspace_file()
+ 
+-GAP_BINARY = os.path.join(SAGE_LOCAL, 'bin', 'gap')
++GAP_BINARY = os.path.join(SAGE_LOCAL, 'bin', 'gap-4.8')
+ 
+ first_try = True
+ 
+-gap_cmd = "gap -r"
++gap_cmd = "gap-4.8 -r"
+ if platform.processor() == 'ia64' and os.path.exists('/usr/bin/prctl'):
+     # suppress unaligned access to 0x..., ip=0x... warnings
+     gap_cmd = 'prctl --unaligned=silent ' + gap_cmd
+diff --git a/src/sage/libs/gap/util.pyx b/src/sage/libs/gap/util.pyx
+index 7bffcfc00d..51dad178d5 100644
+--- a/src/sage/libs/gap/util.pyx
++++ b/src/sage/libs/gap/util.pyx
+@@ -170,7 +170,7 @@ def gap_root():
+     if os.path.exists(GAP_ROOT_DIR):
+         return GAP_ROOT_DIR
+     print('The gap-4.5.5.spkg (or later) seems to be not installed!')
+-    gap_sh = open(os.path.join(SAGE_LOCAL, 'bin', 'gap')).read().splitlines()
++    gap_sh = open(os.path.join(SAGE_LOCAL, 'bin', 'gap-4.8')).read().splitlines()
+     gapdir = filter(lambda dir:dir.strip().startswith('GAP_DIR'), gap_sh)[0]
+     gapdir = gapdir.split('"')[1]
+     gapdir = gapdir.replace('$SAGE_LOCAL', SAGE_LOCAL)

Copied: sagemath/repos/community-staging-x86_64/sagemath-lcalc-c++11.patch (from rev 372568, sagemath/trunk/sagemath-lcalc-c++11.patch)
===================================================================
--- community-staging-x86_64/sagemath-lcalc-c++11.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-lcalc-c++11.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,10 @@
+--- a/src/sage/libs/lcalc/lcalc_Lfunction.pxd
++++ b/src/sage/libs/lcalc/lcalc_Lfunction.pxd
+@@ -1,6 +1,5 @@
+ # Lcalc requires GNU extensions, it does not strictly conform to any
+ # C++ standard: https://trac.sagemath.org/ticket/23341
+-# distutils: extra_compile_args = -std=gnu++98
+ 
+ cdef extern from "lcalc_sage.h":
+     ctypedef struct doublevec "std::vector<double>":
+

Copied: sagemath/repos/community-staging-x86_64/sagemath-python3-notebook.patch (from rev 372568, sagemath/trunk/sagemath-python3-notebook.patch)
===================================================================
--- community-staging-x86_64/sagemath-python3-notebook.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-python3-notebook.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,27 @@
+diff --git a/src/bin/sage-notebook b/src/bin/sage-notebook
+index 74192da240..0ede281aad 100755
+--- a/src/bin/sage-notebook
++++ b/src/bin/sage-notebook
+@@ -96,8 +96,7 @@ class NotebookJupyter(object):
+         if not have_prerequisites():
+             print(self.PREREQUISITE_ERROR)
+             raise SystemExit(1)
+-        from notebook.notebookapp import main
+-        main(argv)
++        os.execvp('jupyter-notebook', ['jupyter-notebook'] + argv)
+ 
+ 
+ class NotebookJupyterlab(object):
+diff --git a/src/sage/repl/ipython_kernel/install.py b/src/sage/repl/ipython_kernel/install.py
+index 3912b8cdf5..bd40cdadda 100644
+--- a/src/sage/repl/ipython_kernel/install.py
++++ b/src/sage/repl/ipython_kernel/install.py
+@@ -289,7 +289,6 @@ def have_prerequisites(debug=True):
+         True
+     """
+     try:
+-        from notebook.notebookapp import NotebookApp
+         return True
+     except ImportError:
+         if debug:
+

Copied: sagemath/repos/community-staging-x86_64/sagemath-scipy-1.0.patch (from rev 372568, sagemath/trunk/sagemath-scipy-1.0.patch)
===================================================================
--- community-staging-x86_64/sagemath-scipy-1.0.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-scipy-1.0.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,16 @@
+diff --git a/src/sage/numerical/optimize.py b/src/sage/numerical/optimize.py
+index 17b5ebb84b..7ce9055cba 100644
+--- a/src/sage/numerical/optimize.py
++++ b/src/sage/numerical/optimize.py
+@@ -486,9 +486,9 @@ def minimize_constrained(func,cons,x0,gradient=None,algorithm='default', **args)
+                 else:
+                     min = optimize.fmin_tnc(f, x0, approx_grad=True, bounds=cons, messages=0, **args)[0]
+         elif isinstance(cons[0], function_type) or isinstance(cons[0], Expression):
+-            min = optimize.fmin_cobyla(f, x0, cons, iprint=0, **args)
++            min = optimize.fmin_cobyla(f, x0, cons, **args)
+     elif isinstance(cons, function_type) or isinstance(cons, Expression):
+-        min = optimize.fmin_cobyla(f, x0, cons, iprint=0, **args)
++        min = optimize.fmin_cobyla(f, x0, cons, **args)
+     return vector(RDF, min)
+ 
+ 

Copied: sagemath/repos/community-staging-x86_64/sagemath-singular-4.1.1.patch (from rev 372568, sagemath/trunk/sagemath-singular-4.1.1.patch)
===================================================================
--- community-staging-x86_64/sagemath-singular-4.1.1.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-singular-4.1.1.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,902 @@
+From 426644f6d085e053fa0fcf3457702eac685b7cba Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Sat, 7 Jul 2018 00:37:37 +0200
+Subject: Adapt to singular 4.1.1 API changes
+
+---
+ src/sage/libs/singular/decl.pxd                          |  4 ++--
+ .../rings/polynomial/multi_polynomial_libsingular.pyx    | 16 ++++++++--------
+ src/sage/rings/polynomial/plural.pyx                     |  4 ++--
+ 3 files changed, 12 insertions(+), 12 deletions(-)
+
+diff --git a/src/sage/libs/singular/decl.pxd b/src/sage/libs/singular/decl.pxd
+index 4b658c4..84476a9 100644
+--- a/src/sage/libs/singular/decl.pxd
++++ b/src/sage/libs/singular/decl.pxd
+@@ -170,7 +170,7 @@ cdef extern from "singular/Singular/libsingular.h":
+ 
+     int n_NumberOfParameters(const n_Procs_s* r)
+ 
+-    ctypedef struct poly "polyrec":
++    ctypedef struct poly "spolyrec":
+         poly *next
+         number *coef
+         unsigned long exp[1]
+@@ -632,7 +632,7 @@ cdef extern from "singular/Singular/libsingular.h":
+ 
+     # divide monomial p by monomial q, p,q const
+ 
+-    poly *pDivide(poly *p,poly *q)
++    poly *pMDivide(poly *p,poly *q)
+ 
+     # return the i-th power of p; p destroyed, requires global ring
+ 
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index 2a8d9ae..f2a11a8 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -190,8 +190,8 @@ from sage.libs.singular.decl cimport (
+     n_IsUnit, n_Invers,
+     p_ISet, rChangeCurrRing, p_Copy, p_Init, p_SetCoeff, p_Setm, p_SetExp, p_Add_q,
+     p_NSet, p_GetCoeff, p_Delete, p_GetExp, pNext, rRingVar, omAlloc0, omStrDup,
+-    omFree, pDivide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
+-    pDivide, p_IsConstant, p_ExpVectorEqual, p_String, p_LmInit, n_Copy,
++    omFree, pMDivide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
++    pMDivide, p_IsConstant, p_ExpVectorEqual, p_String, p_LmInit, n_Copy,
+     p_IsUnit, p_Series, p_Head, idInit, fast_map_common_subexp, id_Delete,
+     p_IsHomogeneous, p_Homogen, p_Totaldegree,pLDeg1_Totaldegree, singclap_pdivide, singclap_factorize,
+     idLift, IDELEMS, On, Off, SW_USE_CHINREM_GCD, SW_USE_EZGCD,
+@@ -1693,8 +1693,8 @@ cdef class MPolynomialRing_libsingular(MPolynomialRing_base):
+         if not g._poly:
+             raise ZeroDivisionError
+ 
+-        if r!=currRing: rChangeCurrRing(r)  # pDivide
+-        res = pDivide(f._poly, g._poly)
++        if r!=currRing: rChangeCurrRing(r)  # pMDivide
++        res = pMDivide(f._poly, g._poly)
+         if coeff:
+             if r.cf.type == n_unknown or r.cf.cfDivBy(p_GetCoeff(f._poly, r), p_GetCoeff(g._poly, r), r.cf):
+                 n = r.cf.cfDiv( p_GetCoeff(f._poly, r) , p_GetCoeff(g._poly, r), r.cf)
+@@ -1853,8 +1853,8 @@ cdef class MPolynomialRing_libsingular(MPolynomialRing_base):
+                    and (<MPolynomial_libsingular>g) \
+                    and g.parent() is self \
+                    and p_LmDivisibleBy((<MPolynomial_libsingular>g)._poly, m, r):
+-                if r!=currRing: rChangeCurrRing(r)  # pDivide
+-                flt = pDivide(f._poly, (<MPolynomial_libsingular>g)._poly)
++                if r!=currRing: rChangeCurrRing(r)  # pMDivide
++                flt = pMDivide(f._poly, (<MPolynomial_libsingular>g)._poly)
+                 #p_SetCoeff(flt, n_Div( p_GetCoeff(f._poly, r) , p_GetCoeff((<MPolynomial_libsingular>g)._poly, r), r), r)
+                 p_SetCoeff(flt, n_Init(1, r), r)
+                 return new_MP(self,flt), g
+@@ -4055,10 +4055,10 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             if _right.is_monomial():
+                 p = _self._poly
+                 quo = p_ISet(0,r)
+-                if r != currRing: rChangeCurrRing(r)   # pDivide
++                if r != currRing: rChangeCurrRing(r)   # pMDivide
+                 while p:
+                     if p_DivisibleBy(_right._poly, p, r):
+-                        temp = pDivide(p, _right._poly)
++                        temp = pMDivide(p, _right._poly)
+                         p_SetCoeff0(temp, n_Copy(p_GetCoeff(p, r), r), r)
+                         quo = p_Add_q(quo, temp, r)
+                     p = pNext(p)
+diff --git a/src/sage/rings/polynomial/plural.pyx b/src/sage/rings/polynomial/plural.pyx
+index d5439f7f..ad20ebc 100644
+--- a/src/sage/rings/polynomial/plural.pyx
++++ b/src/sage/rings/polynomial/plural.pyx
+@@ -998,7 +998,7 @@ cdef class NCPolynomialRing_plural(Ring):
+         if not g._poly:
+             raise ZeroDivisionError
+ 
+-        res = pDivide(f._poly,g._poly)
++        res = pMDivide(f._poly,g._poly)
+         if coeff:
+             if (r.cf.type == n_unknown) or r.cf.cfDivBy(p_GetCoeff(f._poly, r), p_GetCoeff(g._poly, r), r.cf):
+                 n = r.cf.cfDiv( p_GetCoeff(f._poly, r) , p_GetCoeff(g._poly, r), r.cf)
+@@ -1193,7 +1193,7 @@ cdef class NCPolynomialRing_plural(Ring):
+             if isinstance(g, NCPolynomial_plural) \
+                    and (<NCPolynomial_plural>g) \
+                    and p_LmDivisibleBy((<NCPolynomial_plural>g)._poly, m, r):
+-                flt = pDivide(f._poly, (<NCPolynomial_plural>g)._poly)
++                flt = pMDivide(f._poly, (<NCPolynomial_plural>g)._poly)
+                 #p_SetCoeff(flt, n_Div( p_GetCoeff(f._poly, r) , p_GetCoeff((<NCPolynomial_plural>g)._poly, r), r), r)
+                 p_SetCoeff(flt, n_Init(1, r), r)
+                 return new_NCP(self,flt), g
+-- 
+cgit v1.0-1-gd88e
+
+
+From d5fc2a4bc640856507d743c2f67ad454874700e7 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Sat, 7 Jul 2018 00:38:56 +0200
+Subject: Don't call singclap_pdivide for integer coefficients, it's no longer
+ supported
+
+---
+ src/sage/rings/polynomial/multi_polynomial_libsingular.pyx | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index f2a11a8..774fecd 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -4888,7 +4888,7 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if right.is_zero():
+             raise ZeroDivisionError
+ 
+-        if not self._parent._base.is_field() and not is_IntegerRing(self._parent._base):
++        if not self._parent._base.is_field():
+             py_quo = self//right
+             py_rem = self - right*py_quo
+             return py_quo, py_rem
+-- 
+cgit v1.0-1-gd88e
+
+
+From 4763da19a9ea0be849ee3640fc39747d725cb5a1 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Sat, 21 Jul 2018 11:31:02 +0200
+Subject: Fix lcm of polynomials with integer coefficients and add test
+
+---
+ src/sage/rings/polynomial/multi_polynomial_libsingular.pyx | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index 774fecd..bb5aca6 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -4794,6 +4794,8 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             sage: p = -x*y + x*z + 54*x - 2
+             sage: (5*p^2).lcm(3*p) == 15*p^2
+             True
++            sage: lcm(2*x,2*x*y)
++            2*x*y
+         """
+         cdef ring *_ring = self._parent_ring
+         cdef poly *ret
+@@ -4805,6 +4807,12 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if _ring.cf.type != n_unknown:
+             if _ring.cf.type == n_Znm or _ring.cf.type == n_Zn or _ring.cf.type == n_Z2m :
+                 raise TypeError("LCM over non-integral domains not available.")
++            if _ring.cf.type == n_Z:
++                f_content = self.content()
++                g_content = g.content()
++                f_primitivepart = self / f_content
++                g_primitivepart = g / g_content
++                return f_primitivepart.change_ring(RationalField()).lcm(g_primitivepart.change_ring(RationalField())) * f_content.lcm(g_content)
+ 
+         if self._parent is not g._parent:
+             _g = self._parent._coerce_c(g)
+-- 
+cgit v1.0-1-gd88e
+
+
+From 544f67d45ce00142d99cbca7ca1ef39df95d3551 Mon Sep 17 00:00:00 2001
+From: Timo Kaufmann <timokau at zoho.com>
+Date: Fri, 20 Jul 2018 16:58:48 +0200
+Subject: =?UTF-8?q?Revert=20"Trac=20#25313:=20Speed=20up=20exact=20divisio?=
+ =?UTF-8?q?n=20in=20=E2=84=A4[x,y,...]"?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This reverts commit 5ef19ad3901910976878348ef2ec76637420010b, reversing
+changes made to 1c41c1d6cadf5bb863d5c0d125300a153f232fa5.
+---
+ .../rings/polynomial/multi_polynomial_libsingular.pyx     | 15 +++++----------
+ 1 file changed, 5 insertions(+), 10 deletions(-)
+
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index bb5aca6..92d6ed5 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -4023,16 +4023,6 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             Traceback (most recent call last):
+             ...
+             NotImplementedError: Division of multivariate polynomials over non fields by non-monomials not implemented.
+-
+-        TESTS::
+-
+-            sage: P.<x,y> = ZZ[]
+-            sage: p = 3*(-x^8*y^2 - x*y^9 + 6*x^8*y + 17*x^2*y^6 - x^3*y^2)
+-            sage: q = 7*(x^2 + x*y + y^2 + 1)
+-            sage: p*q//q == p
+-            True
+-            sage: p*q//p == q
+-            True
+         """
+         cdef MPolynomialRing_libsingular parent = self._parent
+         cdef ring *r = self._parent_ring
+@@ -4052,6 +4042,11 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         _right = <MPolynomial_libsingular>right
+ 
+         if r.cf.type != n_unknown:
++            if r.cf.type == n_Z:
++                P = parent.change_ring(RationalField())
++                f = P(self)//P(right)
++                CM = list(f)
++                return parent(sum([c.floor()*m for c,m in CM]))
+             if _right.is_monomial():
+                 p = _self._poly
+                 quo = p_ISet(0,r)
+-- 
+cgit v1.0-1-gd88e
+
+
+From 2cd8487ff5a7f74c6c75659b44be5f48d27639e6 Mon Sep 17 00:00:00 2001
+From: Timo Kaufmann <timokau at zoho.com>
+Date: Fri, 20 Jul 2018 18:32:20 +0200
+Subject: singular: update doctests
+
+---
+ src/sage/rings/polynomial/multi_polynomial_ideal.py        | 1 +
+ src/sage/rings/polynomial/multi_polynomial_libsingular.pyx | 2 +-
+ src/sage/rings/polynomial/polynomial_singular_interface.py | 8 ++++----
+ 3 files changed, 6 insertions(+), 5 deletions(-)
+
+diff --git a/src/sage/rings/polynomial/multi_polynomial_ideal.py b/src/sage/rings/polynomial/multi_polynomial_ideal.py
+index 37dc45c..8bd5306 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_ideal.py
++++ b/src/sage/rings/polynomial/multi_polynomial_ideal.py
+@@ -2199,6 +2199,7 @@ class MPolynomialIdeal_singular_repr(
+             sage: I.variety()
+             verbose 0 (...: multi_polynomial_ideal.py, variety) Warning: computations in the complex field are inexact; variety may be computed partially or incorrectly.
+             verbose 0 (...: multi_polynomial_ideal.py, variety) Warning: falling back to very slow toy implementation.
++            ...
+             [{y: -0.86602540378443... - 0.500000000000000*I},
+              {y: -0.86602540378443... + 0.500000000000000*I},
+              {y: 0.86602540378443... - 0.500000000000000*I},
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index 92d6ed5..619e7f0 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -4869,7 +4869,7 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             sage: f.quo_rem(y)
+             (2*x^2, x + 1)
+             sage: f.quo_rem(3*x)
+-            (2*x*y + 1, -4*x^2*y - 2*x + 1)
++            (0, 2*x^2*y + x + 1)
+ 
+         TESTS::
+ 
+diff --git a/src/sage/rings/polynomial/polynomial_singular_interface.py b/src/sage/rings/polynomial/polynomial_singular_interface.py
+index 9331169..f753610 100644
+--- a/src/sage/rings/polynomial/polynomial_singular_interface.py
++++ b/src/sage/rings/polynomial/polynomial_singular_interface.py
+@@ -81,8 +81,8 @@ class PolynomialRing_singular_repr:
+             sage: R.<x,y> = PolynomialRing(CC)
+             sage: singular(R)
+             polynomial ring, over a field, global ordering
+-            //   coefficients: float[I](complex:15 digits, additional 0 digits)/(I^2+1)
+-            //   number of vars : 2
++            // coefficients: real[I](complex:15 digits, additional 0 digits)/(I^2+1)
++            // number of vars : 2
+             //        block   1 : ordering dp
+             //                  : names    x y
+             //        block   2 : ordering C
+@@ -90,8 +90,8 @@ class PolynomialRing_singular_repr:
+             sage: R.<x,y> = PolynomialRing(RealField(100))
+             sage: singular(R)
+             polynomial ring, over a field, global ordering
+-            //   coefficients: float
+-            //   number of vars : 2
++            // coefficients: Float()
++            // number of vars : 2
+             //        block   1 : ordering dp
+             //                  : names    x y
+             //        block   2 : ordering C
+-- 
+cgit v1.0-1-gd88e
+
+
+From d9dc104b4ff3d3cc34fa8ec9483f83fce033f627 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Sun, 22 Jul 2018 00:54:38 +0200
+Subject: Make Singular error parser more granular
+
+---
+ src/sage/interfaces/singular.py                     | 2 +-
+ src/sage/rings/polynomial/multi_polynomial_ideal.py | 1 -
+ 2 files changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index 9d65c9f..031172e 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -654,7 +654,7 @@ class Singular(ExtraTabCompletion, Expect):
+ 
+         s = Expect.eval(self, x, **kwds)
+ 
+-        if s.find("error") != -1 or s.find("Segment fault") != -1:
++        if s.find("error occurred") != -1 or s.find("Segment fault") != -1:
+             raise SingularError('Singular error:\n%s'%s)
+ 
+         if get_verbose() > 0:
+diff --git a/src/sage/rings/polynomial/multi_polynomial_ideal.py b/src/sage/rings/polynomial/multi_polynomial_ideal.py
+index 8bd5306..37dc45c 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_ideal.py
++++ b/src/sage/rings/polynomial/multi_polynomial_ideal.py
+@@ -2199,7 +2199,6 @@ class MPolynomialIdeal_singular_repr(
+             sage: I.variety()
+             verbose 0 (...: multi_polynomial_ideal.py, variety) Warning: computations in the complex field are inexact; variety may be computed partially or incorrectly.
+             verbose 0 (...: multi_polynomial_ideal.py, variety) Warning: falling back to very slow toy implementation.
+-            ...
+             [{y: -0.86602540378443... - 0.500000000000000*I},
+              {y: -0.86602540378443... + 0.500000000000000*I},
+              {y: 0.86602540378443... - 0.500000000000000*I},
+-- 
+cgit v1.0-1-gd88e
+
+
+From ab851b1a2485c98b9f281e5bb5ea294e84f39040 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Sun, 22 Jul 2018 01:02:23 +0200
+Subject: Update some tests output
+
+---
+ src/sage/interfaces/singular.py | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index 031172e..f7972f5 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -1079,7 +1079,7 @@ class Singular(ExtraTabCompletion, Expect):
+             sage: S = singular.ring('real', '(a,b)', 'lp')
+             sage: singular.current_ring()
+             polynomial ring, over a field, global ordering
+-            //   coefficients: float
++            //   coefficients: Float()
+             //   number of vars : 2
+             //        block   1 : ordering lp
+             //                  : names    a b
+@@ -1157,7 +1157,7 @@ class Singular(ExtraTabCompletion, Expect):
+              sage: singular._tab_completion()
+              ['exteriorPower',
+               ...
+-              'flintZ']
++              'crossprod']
+          """
+         p = re.compile("// *([a-z0-9A-Z_]*).*") #compiles regular expression
+         proclist = self.eval("listvar(proc)").splitlines()
+@@ -1183,7 +1183,7 @@ class Singular(ExtraTabCompletion, Expect):
+         EXAMPLES::
+ 
+             sage: singular.version()
+-            "Singular ... version 4.1.0 ...
++            "Singular ... version 4.1.1 ...
+         """
+         return singular_version()
+ 
+@@ -1992,7 +1992,7 @@ class SingularElement(ExtraTabCompletion, ExpectElement):
+             sage: S = singular.ring('real', '(a,b)', 'lp')
+             sage: singular.current_ring()
+             polynomial ring, over a field, global ordering
+-            //   coefficients: float
++            //   coefficients: Float()
+             //   number of vars : 2
+             //        block   1 : ordering lp
+             //                  : names    a b
+@@ -2072,7 +2072,7 @@ class SingularElement(ExtraTabCompletion, ExpectElement):
+             sage: R._tab_completion()
+             ['exteriorPower',
+              ...
+-             'flintZ']
++             'crossprod']
+         """
+         return self.parent()._tab_completion()
+ 
+@@ -2358,7 +2358,7 @@ def singular_version():
+     EXAMPLES::
+ 
+         sage: singular.version()
+-        "Singular ... version 4.1.0 ...
++        "Singular ... version 4.1.1 ...
+     """
+     return singular.eval('system("--version");')
+ 
+-- 
+cgit v1.0-1-gd88e
+
+
+From 921cc310908e1880884af556dc9452c2b4ba8bc8 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Tue, 24 Jul 2018 18:45:26 +0200
+Subject: Fix real base ring detection
+
+Singular prints it as 'Float()' instead of 'real' now
+---
+ src/sage/interfaces/singular.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index f7972f5..3815951 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -1562,7 +1562,7 @@ class SingularElement(ExtraTabCompletion, ExpectElement):
+         elif charstr[0] in ['0', 'QQ']:
+             from sage.all import QQ
+             br = QQ
+-        elif charstr[0]=='real':
++        elif charstr[0].startswith('Float'):
+             from sage.all import RealField, ceil, log
+             prec = singular.eval('ringlist(basering)[1][2][1]')
+             br = RealField(ceil((ZZ(prec)+1)/log(2,10)))
+-- 
+cgit v1.0-1-gd88e
+
+
+From 0f55b763c775bb0d652b53d50dc26f11e9f472a0 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Tue, 24 Jul 2018 19:16:20 +0200
+Subject: More real -> Float porting
+
+---
+ src/sage/interfaces/singular.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index 3815951..0447920 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -1750,7 +1750,7 @@ class SingularElement(ExtraTabCompletion, ExpectElement):
+ 
+         # Singular 4 puts parentheses around floats and sign outside them
+         charstr = self.parent().eval('charstr(basering)').split(',',1)
+-        if charstr[0] in ['real', 'complex']:
++        if charstr[0]=='complex' or charstr[0].startswith('Float'):
+               for i in range(coeff_start, 2 * coeff_start):
+                   singular_poly_list[i] = singular_poly_list[i].replace('(','').replace(')','')
+ 
+-- 
+cgit v1.0-1-gd88e
+
+
+From aea054407a41a517070eb06e8efcd02d6356269f Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Tue, 24 Jul 2018 19:38:55 +0200
+Subject: Don't check for exact Singular version
+
+Should improve testing future Singular upgrades on distributions
+---
+ src/sage/interfaces/singular.py | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index 0447920..a028bbe 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -1183,7 +1183,7 @@ class Singular(ExtraTabCompletion, Expect):
+         EXAMPLES::
+ 
+             sage: singular.version()
+-            "Singular ... version 4.1.1 ...
++            "Singular ... version 4...
+         """
+         return singular_version()
+ 
+@@ -2358,7 +2358,7 @@ def singular_version():
+     EXAMPLES::
+ 
+         sage: singular.version()
+-        "Singular ... version 4.1.1 ...
++        "Singular ... version 4...
+     """
+     return singular.eval('system("--version");')
+ 
+-- 
+cgit v1.0-1-gd88e
+
+
+From 4e52b5e3ca6bbb34666c25decbf9bab3e2b46e82 Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Wed, 25 Jul 2018 16:17:38 +0200
+Subject: Use p_Divide for lcm as suggested by upstream
+
+See https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=2768
+---
+ src/sage/libs/singular/decl.pxd                            |  4 ++++
+ src/sage/rings/polynomial/multi_polynomial_libsingular.pyx | 12 ++----------
+ 2 files changed, 6 insertions(+), 10 deletions(-)
+
+diff --git a/src/sage/libs/singular/decl.pxd b/src/sage/libs/singular/decl.pxd
+index 84476a9..d863740 100644
+--- a/src/sage/libs/singular/decl.pxd
++++ b/src/sage/libs/singular/decl.pxd
+@@ -630,6 +630,10 @@ cdef extern from "singular/Singular/libsingular.h":
+     # return p*q, destroys p and q
+     poly *p_Mult_q(poly *p, poly *q, ring *r)
+ 
++    # polynomial division, ignoring the rest
++    # via singclap_pdivide resp. idLift, destroys p,q
++    poly *p_Divide(poly *p, poly *q, ring *r)
++
+     # divide monomial p by monomial q, p,q const
+ 
+     poly *pMDivide(poly *p,poly *q)
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index 619e7f0..aeff53a 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -190,7 +190,7 @@ from sage.libs.singular.decl cimport (
+     n_IsUnit, n_Invers,
+     p_ISet, rChangeCurrRing, p_Copy, p_Init, p_SetCoeff, p_Setm, p_SetExp, p_Add_q,
+     p_NSet, p_GetCoeff, p_Delete, p_GetExp, pNext, rRingVar, omAlloc0, omStrDup,
+-    omFree, pMDivide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
++    omFree, pMDivide, p_Divide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
+     pMDivide, p_IsConstant, p_ExpVectorEqual, p_String, p_LmInit, n_Copy,
+     p_IsUnit, p_Series, p_Head, idInit, fast_map_common_subexp, id_Delete,
+     p_IsHomogeneous, p_Homogen, p_Totaldegree,pLDeg1_Totaldegree, singclap_pdivide, singclap_factorize,
+@@ -4802,12 +4802,6 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if _ring.cf.type != n_unknown:
+             if _ring.cf.type == n_Znm or _ring.cf.type == n_Zn or _ring.cf.type == n_Z2m :
+                 raise TypeError("LCM over non-integral domains not available.")
+-            if _ring.cf.type == n_Z:
+-                f_content = self.content()
+-                g_content = g.content()
+-                f_primitivepart = self / f_content
+-                g_primitivepart = g / g_content
+-                return f_primitivepart.change_ring(RationalField()).lcm(g_primitivepart.change_ring(RationalField())) * f_content.lcm(g_content)
+ 
+         if self._parent is not g._parent:
+             _g = self._parent._coerce_c(g)
+@@ -4824,9 +4818,7 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if _ring!=currRing: rChangeCurrRing(_ring)  # singclap_gcd
+         gcd = singclap_gcd(p_Copy(self._poly, _ring), p_Copy(_g._poly, _ring), _ring )
+         prod = pp_Mult_qq(self._poly, _g._poly, _ring)
+-        ret = singclap_pdivide(prod , gcd , _ring)
+-        p_Delete(&prod, _ring)
+-        p_Delete(&gcd, _ring)
++        ret = p_Divide(prod, gcd, _ring)
+         if count >= 20:
+             sig_off()
+         return new_MP(self._parent, ret)
+-- 
+cgit v1.0-1-gd88e
+
+From 930ba2eb1cacaf4e1e43733feb560dd105d531be Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Wed, 25 Jul 2018 22:45:15 +0200
+Subject: Remove duplicate cimport
+
+---
+ src/sage/rings/polynomial/multi_polynomial_libsingular.pyx | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index aeff53a..f0a174f 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -190,7 +190,7 @@ from sage.libs.singular.decl cimport (
+     n_IsUnit, n_Invers,
+     p_ISet, rChangeCurrRing, p_Copy, p_Init, p_SetCoeff, p_Setm, p_SetExp, p_Add_q,
+     p_NSet, p_GetCoeff, p_Delete, p_GetExp, pNext, rRingVar, omAlloc0, omStrDup,
+-    omFree, pMDivide, p_Divide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
++    omFree, p_Divide, p_SetCoeff0, n_Init, p_DivisibleBy, pLcm, p_LmDivisibleBy,
+     pMDivide, p_IsConstant, p_ExpVectorEqual, p_String, p_LmInit, n_Copy,
+     p_IsUnit, p_Series, p_Head, idInit, fast_map_common_subexp, id_Delete,
+     p_IsHomogeneous, p_Homogen, p_Totaldegree,pLDeg1_Totaldegree, singclap_pdivide, singclap_factorize,
+-- 
+cgit v1.0-1-gd88e
+
+From 07ef11b3209f498dc771bf5cb02f1b3ce1264cbb Mon Sep 17 00:00:00 2001
+From: Antonio Rojas <arojas at archlinux.org>
+Date: Thu, 26 Jul 2018 15:25:57 +0200
+Subject: rest -> reminder
+
+---
+ src/sage/libs/singular/decl.pxd | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/sage/libs/singular/decl.pxd b/src/sage/libs/singular/decl.pxd
+index d863740..7f09aaf 100644
+--- a/src/sage/libs/singular/decl.pxd
++++ b/src/sage/libs/singular/decl.pxd
+@@ -630,7 +630,7 @@ cdef extern from "singular/Singular/libsingular.h":
+     # return p*q, destroys p and q
+     poly *p_Mult_q(poly *p, poly *q, ring *r)
+ 
+-    # polynomial division, ignoring the rest
++    # polynomial division, ignoring the remainder
+     # via singclap_pdivide resp. idLift, destroys p,q
+     poly *p_Divide(poly *p, poly *q, ring *r)
+ 
+-- 
+cgit v1.0-1-gd88e
+
+
+From a9e5aed9215175f8cf49327c790ae153648a2513 Mon Sep 17 00:00:00 2001
+From: Jeroen Demeyer <jdemeyer at cage.ugent.be>
+Date: Sat, 28 Jul 2018 15:09:54 +0200
+Subject: Minor fixes to Singular interface
+
+---
+ src/sage/interfaces/singular.py                    |  4 +-
+ .../polynomial/multi_polynomial_libsingular.pyx    | 79 ++++++++++++----------
+ src/sage/rings/polynomial/plural.pyx               | 19 +++---
+ 3 files changed, 55 insertions(+), 47 deletions(-)
+
+diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
+index a028bbe..3d563ff 100644
+--- a/src/sage/interfaces/singular.py
++++ b/src/sage/interfaces/singular.py
+@@ -654,6 +654,8 @@ class Singular(ExtraTabCompletion, Expect):
+ 
+         s = Expect.eval(self, x, **kwds)
+ 
++        # "Segment fault" is not a typo:
++        # Singular actually does use that string
+         if s.find("error occurred") != -1 or s.find("Segment fault") != -1:
+             raise SingularError('Singular error:\n%s'%s)
+ 
+@@ -1750,7 +1752,7 @@ class SingularElement(ExtraTabCompletion, ExpectElement):
+ 
+         # Singular 4 puts parentheses around floats and sign outside them
+         charstr = self.parent().eval('charstr(basering)').split(',',1)
+-        if charstr[0]=='complex' or charstr[0].startswith('Float'):
++        if charstr[0].startswith('Float') or charstr[0] == 'complex':
+               for i in range(coeff_start, 2 * coeff_start):
+                   singular_poly_list[i] = singular_poly_list[i].replace('(','').replace(')','')
+ 
+diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+index f0a174f..043696e 100644
+--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
++++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+@@ -181,8 +181,8 @@ from cysignals.signals cimport sig_on, sig_off
+ from sage.cpython.string cimport char_to_str, str_to_bytes
+ 
+ # singular types
+-from sage.libs.singular.decl cimport ring, poly, ideal, intvec, number, currRing
+-from sage.libs.singular.decl cimport n_unknown,  n_Zp,  n_Q,   n_R,   n_GF,  n_long_R,  n_algExt,n_transExt,n_long_C,   n_Z,   n_Zn,  n_Znm,  n_Z2m,  n_CF
++from sage.libs.singular.decl cimport (ring, poly, ideal, intvec, number,
++    currRing, n_unknown, n_Z, n_Zn, n_Znm, n_Z2m)
+ 
+ # singular functions
+ from sage.libs.singular.decl cimport (
+@@ -198,7 +198,7 @@ from sage.libs.singular.decl cimport (
+     p_LmIsConstant, pTakeOutComp1, singclap_gcd, pp_Mult_qq, p_GetMaxExp,
+     pLength, kNF, p_Neg, p_Minus_mm_Mult_qq, p_Plus_mm_Mult_qq,
+     pDiff, singclap_resultant, p_Normalize,
+-    prCopyR, prCopyR_NoSort )
++    prCopyR, prCopyR_NoSort)
+ 
+ # singular conversion routines
+ from sage.libs.singular.singular cimport si2sa, sa2si, overflow_check
+@@ -225,7 +225,7 @@ from sage.rings.polynomial.polynomial_ring import is_PolynomialRing
+ # base ring imports
+ from sage.rings.finite_rings.finite_field_prime_modn import FiniteField_prime_modn
+ from sage.rings.rational cimport Rational
+-from sage.rings.rational_field import RationalField
++from sage.rings.rational_field import QQ
+ from sage.rings.complex_field import is_ComplexField
+ from sage.rings.real_mpfr import is_RealField
+ from sage.rings.integer_ring import is_IntegerRing, ZZ
+@@ -1693,7 +1693,8 @@ cdef class MPolynomialRing_libsingular(MPolynomialRing_base):
+         if not g._poly:
+             raise ZeroDivisionError
+ 
+-        if r!=currRing: rChangeCurrRing(r)  # pMDivide
++        if r is not currRing:
++            rChangeCurrRing(r)
+         res = pMDivide(f._poly, g._poly)
+         if coeff:
+             if r.cf.type == n_unknown or r.cf.cfDivBy(p_GetCoeff(f._poly, r), p_GetCoeff(g._poly, r), r.cf):
+@@ -1846,19 +1847,18 @@ cdef class MPolynomialRing_libsingular(MPolynomialRing_base):
+         cdef poly *flt
+ 
+         if not m:
+-            return f,f
++            return (f, f)
+ 
+         for g in G:
+-            if isinstance(g, MPolynomial_libsingular) \
+-                   and (<MPolynomial_libsingular>g) \
+-                   and g.parent() is self \
+-                   and p_LmDivisibleBy((<MPolynomial_libsingular>g)._poly, m, r):
+-                if r!=currRing: rChangeCurrRing(r)  # pMDivide
+-                flt = pMDivide(f._poly, (<MPolynomial_libsingular>g)._poly)
+-                #p_SetCoeff(flt, n_Div( p_GetCoeff(f._poly, r) , p_GetCoeff((<MPolynomial_libsingular>g)._poly, r), r), r)
+-                p_SetCoeff(flt, n_Init(1, r), r)
+-                return new_MP(self,flt), g
+-        return self._zero_element,self._zero_element
++            if isinstance(g, MPolynomial_libsingular) and g:
++                h = <MPolynomial_libsingular>g
++                if h._parent is self and p_LmDivisibleBy(h._poly, m, r):
++                    if r is not currRing:
++                        rChangeCurrRing(r)
++                    flt = pMDivide(f._poly, h._poly)
++                    p_SetCoeff(flt, n_Init(1, r), r)
++                    return (new_MP(self, flt), h)
++        return (self._zero_element, self._zero_element)
+ 
+     def monomial_pairwise_prime(self, MPolynomial_libsingular g, MPolynomial_libsingular h):
+         """
+@@ -4023,11 +4023,19 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             Traceback (most recent call last):
+             ...
+             NotImplementedError: Division of multivariate polynomials over non fields by non-monomials not implemented.
++
++        TESTS::
++
++            sage: P.<x,y> = ZZ[]
++            sage: p = 3*(-x^8*y^2 - x*y^9 + 6*x^8*y + 17*x^2*y^6 - x^3*y^2)
++            sage: q = 7*(x^2 + x*y + y^2 + 1)
++            sage: p*q//q == p
++            True
++            sage: p*q//p == q
++            True
+         """
+         cdef MPolynomialRing_libsingular parent = self._parent
+         cdef ring *r = self._parent_ring
+-        if(r != currRing): rChangeCurrRing(r)
+-        cdef MPolynomial_libsingular _self, _right
+         cdef poly *quo
+         cdef poly *temp
+         cdef poly *p
+@@ -4038,19 +4046,19 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if self._parent._base.is_finite() and self._parent._base.characteristic() > 1<<29:
+             raise NotImplementedError("Division of multivariate polynomials over prime fields with characteristic > 2^29 is not implemented.")
+ 
+-        _self = <MPolynomial_libsingular>self
+         _right = <MPolynomial_libsingular>right
+ 
++        if r is not currRing:
++            rChangeCurrRing(r)
++
+         if r.cf.type != n_unknown:
+             if r.cf.type == n_Z:
+-                P = parent.change_ring(RationalField())
+-                f = P(self)//P(right)
+-                CM = list(f)
+-                return parent(sum([c.floor()*m for c,m in CM]))
++                P = parent.change_ring(QQ)
++                f = (<MPolynomial_libsingular>P(self))._floordiv_(P(right))
++                return parent(sum([c.floor() * m for c, m in f]))
+             if _right.is_monomial():
+-                p = _self._poly
++                p = self._poly
+                 quo = p_ISet(0,r)
+-                if r != currRing: rChangeCurrRing(r)   # pMDivide
+                 while p:
+                     if p_DivisibleBy(_right._poly, p, r):
+                         temp = pMDivide(p, _right._poly)
+@@ -4061,16 +4069,13 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             if r.cf.type == n_Znm or r.cf.type == n_Zn or r.cf.type == n_Z2m :
+                 raise NotImplementedError("Division of multivariate polynomials over non fields by non-monomials not implemented.")
+ 
+-        cdef int count = singular_polynomial_length_bounded(_self._poly,15)
++        count = singular_polynomial_length_bounded(self._poly, 15)
+         if count >= 15:  # note that _right._poly must be of shorter length than self._poly for us to care about this call
+             sig_on()
+-        if r!=currRing: rChangeCurrRing(r)   # singclap_pdivide
+-        quo = singclap_pdivide( _self._poly, _right._poly, r )
++        quo = singclap_pdivide(self._poly, _right._poly, r)
+         if count >= 15:
+             sig_off()
+-        f = new_MP(parent, quo)
+-
+-        return f
++        return new_MP(parent, quo)
+ 
+     def factor(self, proof=True):
+         """
+@@ -4789,7 +4794,9 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             sage: p = -x*y + x*z + 54*x - 2
+             sage: (5*p^2).lcm(3*p) == 15*p^2
+             True
+-            sage: lcm(2*x,2*x*y)
++            sage: lcm(2*x, 2*y)
++            2*x*y
++            sage: lcm(2*x, 2*x*y)
+             2*x*y
+         """
+         cdef ring *_ring = self._parent_ring
+@@ -5222,7 +5229,7 @@ cdef class MPolynomial_libsingular(MPolynomial):
+         if ambient_ring is not self._parent:
+             raise TypeError("the variable is not in the same ring as self")
+ 
+-        if not ambient_ring.has_coerce_map_from(RationalField()):
++        if not ambient_ring.has_coerce_map_from(QQ):
+             raise TypeError("the ring must contain the rational numbers")
+ 
+         gens = ambient_ring.gens()
+@@ -5325,8 +5332,8 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             raise NotImplementedError("Resultants of multivariate polynomials over prime fields with characteristic > 2^29 is not implemented.")
+ 
+         if is_IntegerRing(self._parent._base):
+-            ret = self.change_ring(RationalField()).resultant(other.change_ring(RationalField()),
+-                                                              variable.change_ring(RationalField()))
++            ret = self.change_ring(QQ).resultant(other.change_ring(QQ),
++                                                 variable.change_ring(QQ))
+             return ret.change_ring(ZZ)
+         elif not self._parent._base.is_field():
+             raise ValueError("Resultants require base fields or integer base ring.")
+@@ -5457,7 +5464,7 @@ cdef class MPolynomial_libsingular(MPolynomial):
+             sage: f.numerator().parent() is P
+             True
+         """
+-        if self.base_ring() == RationalField():
++        if self.base_ring() is QQ:
+             #This part is for compatibility with the univariate case,
+             #where the numerator of a polynomial over RationalField
+             #is a polynomial over IntegerRing
+diff --git a/src/sage/rings/polynomial/plural.pyx b/src/sage/rings/polynomial/plural.pyx
+index ad20ebc..6dfcb47 100644
+--- a/src/sage/rings/polynomial/plural.pyx
++++ b/src/sage/rings/polynomial/plural.pyx
+@@ -998,7 +998,7 @@ cdef class NCPolynomialRing_plural(Ring):
+         if not g._poly:
+             raise ZeroDivisionError
+ 
+-        res = pMDivide(f._poly,g._poly)
++        res = pMDivide(f._poly, g._poly)
+         if coeff:
+             if (r.cf.type == n_unknown) or r.cf.cfDivBy(p_GetCoeff(f._poly, r), p_GetCoeff(g._poly, r), r.cf):
+                 n = r.cf.cfDiv( p_GetCoeff(f._poly, r) , p_GetCoeff(g._poly, r), r.cf)
+@@ -1187,17 +1187,16 @@ cdef class NCPolynomialRing_plural(Ring):
+         cdef poly *flt
+ 
+         if not m:
+-            return f,f
++            return (f, f)
+ 
+         for g in G:
+-            if isinstance(g, NCPolynomial_plural) \
+-                   and (<NCPolynomial_plural>g) \
+-                   and p_LmDivisibleBy((<NCPolynomial_plural>g)._poly, m, r):
+-                flt = pMDivide(f._poly, (<NCPolynomial_plural>g)._poly)
+-                #p_SetCoeff(flt, n_Div( p_GetCoeff(f._poly, r) , p_GetCoeff((<NCPolynomial_plural>g)._poly, r), r), r)
+-                p_SetCoeff(flt, n_Init(1, r), r)
+-                return new_NCP(self,flt), g
+-        return self._zero_element,self._zero_element
++            if isinstance(g, NCPolynomial_plural) and g:
++                h = <NCPolynomial_plural>g
++                if p_LmDivisibleBy(h._poly, m, r):
++                    flt = pMDivide(f._poly, h._poly)
++                    p_SetCoeff(flt, n_Init(1, r), r)
++                    return (new_NCP(self,flt), h)
++        return (self._zero_element, self._zero_element)
+ 
+     def monomial_pairwise_prime(self, NCPolynomial_plural g, NCPolynomial_plural h):
+         """
+-- 
+cgit v1.0-1-gd88e
+
+
+From 45ff3719d4f9059a0e85d142cd1e31cb87efa11c Mon Sep 17 00:00:00 2001
+From: Jeroen Demeyer <jdemeyer at cage.ugent.be>
+Date: Wed, 8 Aug 2018 10:31:27 +0200
+Subject: Fix debug build of Singular
+
+---
+ build/pkgs/singular/spkg-install | 10 ++--------
+ 1 file changed, 2 insertions(+), 8 deletions(-)
+
+diff --git a/build/pkgs/singular/spkg-install b/build/pkgs/singular/spkg-install
+index 41dcad1..5a4d8de 100644
+--- a/build/pkgs/singular/spkg-install
++++ b/build/pkgs/singular/spkg-install
+@@ -6,16 +6,10 @@ SRC=`pwd`/src
+ cd "$SRC"
+ 
+ if [ "x$SAGE_DEBUG" = "xyes" ]; then
++    # This used to disable omalloc but that is not really supported
++    # by upstream
+     SINGULAR_CONFIGURE="$SINGULAR_CONFIGURE --enable-debug --disable-optimizationflags"
+ 
+-    # --disable-omalloc is broken: linking fails because of missing flags
+-    #SINGULAR_CONFIGURE="$SINGULAR_CONFIGURE --disable-omalloc"
+-
+-    # Replace omalloc by xalloc in places unaffected by --disable-omalloc
+-    # See xalloc/README, altough here we just replace the folder for simplicity
+-    rm -rf "$SRC/omalloc"
+-    mv "$SRC/xalloc" "$SRC/omalloc"
+-
+     CFLAGS="$CFLAGS -O0 -g"
+     CXXFLAGS="$CXXFLAGS -O0 -g"
+ else
+-- 
+cgit v1.0-1-gd88e
+

Copied: sagemath/repos/community-staging-x86_64/sagemath-threejs.patch (from rev 372568, sagemath/trunk/sagemath-threejs.patch)
===================================================================
--- community-staging-x86_64/sagemath-threejs.patch	                        (rev 0)
+++ community-staging-x86_64/sagemath-threejs.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,11 @@
+--- a/src/sage/repl/rich_output/display_manager.py
++++ b/src/sage/repl/rich_output/display_manager.py
+@@ -746,7 +746,7 @@ class DisplayManager(SageObject):
+         """
+         if online:
+             from sage.misc.package import installed_packages
+-            version = installed_packages()['threejs'].split('.')[0]
++            version = 'r95'
+             return """
+ <script src="https://cdn.rawgit.com/mrdoob/three.js/{0}/build/three.min.js"></script>
+ <script src="https://cdn.rawgit.com/mrdoob/three.js/{0}/examples/js/controls/OrbitControls.js"></script>

Copied: sagemath/repos/community-staging-x86_64/test-optional.patch (from rev 372568, sagemath/trunk/test-optional.patch)
===================================================================
--- community-staging-x86_64/test-optional.patch	                        (rev 0)
+++ community-staging-x86_64/test-optional.patch	2018-08-17 22:29:46 UTC (rev 372569)
@@ -0,0 +1,27 @@
+--- src/sage/doctest/control.py.orig       2016-10-20 19:39:53.714618246 +0200
++++ src/sage/doctest/control.py    2016-10-20 19:40:15.158049920 +0200
+@@ -326,24 +326,6 @@
+             if "all" in options.optional:
+                 # Special case to run all optional tests
+                 options.optional = True
+-            else:
+-                # We replace the 'optional' tag by all optional
+-                # packages for which the installed version matches the
+-                # latest available version (this implies in particular
+-                # that the package is actually installed).
+-                if 'optional' in options.optional:
+-                    options.optional.discard('optional')
+-                    from sage.misc.package import list_packages
+-                    for pkg in list_packages('optional', local=True).values():
+-                        if pkg['installed_version'] == pkg['remote_version']:
+-                            options.optional.add(pkg['name'])
+-
+-                # Check that all tags are valid
+-                for o in options.optional:
+-                    if not optionaltag_regex.search(o):
+-                        raise ValueError('invalid optional tag {!r}'.format(o))
+-
+-                options.optional |= auto_optional_tags
+
+         self.options = options
+         self.files = args



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