install: allow customizing the shellHook #6195
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Description
nix-shell "<home-manager>" -A installfails when a target path to be written by home-manager (eg~/.profile) already exists. This causes problems when I try to bootstrap non-nixos machines with home-manager.There's currently no way to modify the install shellHook, which runs
exec home-manager init --switch --no-flake. This PR allows customizing the shellHook with an override (for example, changing it toexec home-manager init --switch --no-flake -b backup).I've also added an integration test for illustration, happy to remove if you think it's overkill.
Checklist
Change is backwards compatible.
Code formatted with
./format.Code tested through
nix-shell --pure tests -A run.allornix develop --ignore-environment .#allusing Flakes.Test cases updated/added.
Commit messages are formatted.
Maintainer CC
@rycee