nix-profile{,-daemon}.fish: fix do not source twice #13244
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Commit b36637c set `__ETC_PROFILE_NIX_SOURCED` globally, but this is not enough to prevent the script from being run again by child shells, because the variable was not exported and thus not inherited by any child process. Exporting the variable also agrees with the bash scripts. Notably, the old behavior broke `nix develop -c fish` in some cases, because the profile bin directory got prepended to the path, causing binaries from the profile to override binareis from the devshell.
cole-h
approved these changes
May 21, 2025
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Motivation
I was running into an issue with
nix develop -c fishwhere binaries in my profile were overriding binaries from my dev shell. This because thenix-profile.fishscripts were sourced again in the child shell, which prepended the nix profile toPATH.This PR exports
__ETC_PROFILE_NIX_SOURCEDfrom the fish profile scripts to prevent the scripts from running in child shells. This matches the bash profile scripts behavior.Context
Commit b36637c set
__ETC_PROFILE_NIX_SOURCEDglobally, but this is not enough to prevent the script from being run again by child shells, because the variable was not exported and thus not inherited by any child process.Add 👍 to pull requests you find important.
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