From mboxrd@z Thu Jan  1 00:00:00 1970
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Subject: Change syntax of '--with-source' flag to match syntax of
	'--with-commit' flag?
Date: Thu, 07 Feb 2019 07:36:34 +0000 (GMT)
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To: guix-devel <guix-devel@gnu.org>

The '--with-commit' flag changes the source used to build a package, the sy=
ntax takes the form of '--with-commit=3D<package>=3D<commit>'.

The '--with-source' flag also changes the source, but uses the syntax '--wi=
th-source=3D<url or file>', but only transforms the top-level package (e.g.=
 `guix build <top-level package>` or `guix environment --ad-hoc `<top-level=
 package>`). It also only works if the new source file has the form '<packa=
ge name>-<package version>.<extension>', which means if a package source UR=
L isn't named in that way, then you have to first download it, rename it to=
 fit that template, then use --with-source with that file.

I propose changing the syntax of '--with-source=3D' to match the syntax of =
'--with-commit=3D'. This would have the following benefits:

 - No need to download and rename files that don't fit the '<package name>-=
<package version>.<extension>' format.
 - Able to change the source file of a package input of any package in the =
package graph.
 - Makes the syntax consistent with '--with-commit=3D'.

What do other people think?=