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On Fri, 13 May 2022 09:11:30 +0200 |
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Ulrich Mueller <ulm@g.o> wrote: |
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> Recently Debian has started to transition away from the "which" |
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> command. [1] |
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> |
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> which is a non-POSIX command which prints out the location of |
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> specified executables that are in your path. Unfortunately, there are |
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> several versions of the program around which are not compatible with |
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> each other. We package the GNU version as sys-apps/which, which is in |
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> the system set since 2004. |
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> |
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> Already in 2007, vapier asked developers to avoid which in ebuilds. |
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> [2] The replacement in most circumstances is "type -p" which is a bash |
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> builtin command. |
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> |
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> So, should we join the "which hunt", with the goal of removing |
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> sys-apps/which from the system set and from stage1? I think the first |
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> step would be to identify which packages use which, and add it as an |
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> explicit dependency. (Maybe the tinderbox could help there?) A bug for |
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> this [3] has already been filed by mgorny some time ago. |
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> |
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> Unfortunately, the command pops up in unexpected places, e.g. it |
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> appears to be an (indirect) build-time dependency of systemd. [4] |
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> |
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> Ulrich |
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> |
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> [1] https://lwn.net/Articles/874049/ |
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> [2] |
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> https://archives.gentoo.org/gentoo-dev/message/e04d4db72572dd5fec48e87c6b18c525 |
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> [3] https://bugs.gentoo.org/646588 [4] https://bugs.gentoo.org/502084 |
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To solve this exact issue I wrote a pure shell script to find |
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executable files in the user's $PATH. It should work with posix |
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compatible shell and about as fast as which(1). |
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https://notabug.org/orbea/exists/src/master/exists.sh |
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There are a lot of tests as well. |
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https://notabug.org/orbea/exists/src/master/test.sh |
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