Summary

When Granted is installed via Nix, the assume.fish and assume.tcsh scripts are placed in the share/ directory rather than bin/. However, the alias setup code in pkg/alias/alias.go only knows about:

• /usr/local/bin/assume.fish (default)
• $(brew --prefix)/bin/assume.fish (Homebrew)

This causes fish and tcsh users on Nix to get a broken alias that points to a non-existent path.

Actual paths on Nix

$ which granted
/nix/store/ga93f7hvqn2zbnkdmghy5whsmwg3vbdw-granted-0.38.0/bin/granted

$ ls /nix/store/ga93f7hvqn2zbnkdmghy5whsmwg3vbdw-granted-0.38.0/share/
assume.fish

$ ls /nix/store/ga93f7hvqn2zbnkdmghy5whsmwg3vbdw-granted-0.38.0/bin/
assume      assumego    granted

Note: bin/assume is the POSIX shell script (bash/zsh), not the fish script.

Root cause

The nixpkgs package correctly installs assume.fish to share/ (following FHS conventions), but GetFishAlias() and GetTcshAlias() in pkg/alias/alias.go don't detect Nix installations.

Fix

PR #921 adds Nix detection by checking if the granted binary is in /nix/store/, then constructs the correct path to share/assume.fish.

Environment

• Granted version: 0.38.0
• Shell: fish 3.x
• Install method: Nix