[pacman-dev] Alternatives system brainstorm

[Daan van Rossum]

* on Saturday, 2019-10-19 18:15 +1000, Allan McRae <allan at archlinux.org> wrote:

> /bin/sh -> bash/dash
> /usr/bin/awk -> gawk/nawk
> /usr/bin/cc -> gcc/clang

Can we provide alternatives by means of sets of mutually exclusive link packages, using package properties that are already supported in pacman?

sh-bash
	provides=('sh')
	depends=('bash')
	conflicts=('sh-dash')
sh-dash
	provides=('sh')
	depends=('dash')
	conflicts=('sh-bash')
bash
	depends('sh')
dash
	depends('sh')

The circular dependency can only be satisfied at install time if bash is installed together with sh-bash, or if another sh provider already exists in the system (e.g. dash and sh-dash).

Daan
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