Fish: Difference between revisions
→Setting fish as default shell: Update suggested .bashrc to use simpler, more correct script to drop into FIsh. Discussion talk page: Talk:Fish#Suggested_bashrc_in_Fish#Setting_fish_as_default_shell_needs_revision. This script it adapted from ArchWiki (where I help to maintain it). I've also replaced mention of gentoo wiki with the Arch solution, but we didn't use the version from gentoo wiki anyway. |
m Replaced attr def with a inherit, does the same thing. |
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grc | grc | ||
# Use 3rd-party fish plugins manually packaged. | # Use 3rd-party fish plugins manually packaged. | ||
(pkgs.callPackage ../fish-colored-man.nix { | (pkgs.callPackage ../fish-colored-man.nix { inherit (pkgs.fishPlugins) buildFishPlugin; } ) | ||
]; | ]; | ||
</nowiki> | </nowiki> | ||
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== Tips and tricks == | == Tips and tricks == | ||
=== Setting fish as default shell === | === Setting fish as the default shell === | ||
It is possible to set fish as the interactive non-login shell for your terminal emulator without setting it as the login shell (the one in <code>/etc/passwd</code>). | |||
As this is usually a user-wise setting, to configure the terminal emulator you will need to either modify its config file, or use [[Home Manager]]. | |||
==== Setting fish as default for Kitty ==== | |||
Using [[Home Manager]]: | |||
{{File|3=programs.kitty = { | |||
enable = true; | |||
shellIntegration.enableFishIntegration = true; | |||
settings = { | |||
shell = "fish"; | |||
}; | |||
};|name=home.nix|lang=nix}} | |||
Note: the <code>shellIntegration.enableFishIntegration = true;</code> is not required for setting fish as default, but provides other useful quality-of-life features, see https://sw.kovidgoyal.net/kitty/shell-integration/. | |||
For use without home-manager, refer to https://sw.kovidgoyal.net/kitty/conf/#opt-kitty.shell and https://sw.kovidgoyal.net/kitty/conf/#opt-kitty.shell_integration. | |||
'''Setting fish as default for Gnome Console''' | |||
Using [[Home-manager|Home Manager]]: | |||
{{File|3=home-manager.users.myuser = { | |||
dconf = { | |||
enable = true; | |||
settings."org/gnome/Console" = { | |||
shell = [ "fish" ]; | |||
}; | |||
}; | |||
};|name=home.nix|lang=nix}} | |||
=== Setting fish as the login shell === | |||
Using fish as the the login shell can cause compatibility issues. For example, certain recovery environments such as systemd's emergency mode to be completely broken when fish was set as the login shell. ArchWiki presents an [https://wiki.archlinux.org/title/Fish#Modify_.bashrc_to_drop_into_fish alternative solution], keeping bash as the system shell but having it exec fish when run interactively. | Using fish as the the login shell can cause compatibility issues. For example, certain recovery environments such as systemd's emergency mode to be completely broken when fish was set as the login shell. ArchWiki presents an [https://wiki.archlinux.org/title/Fish#Modify_.bashrc_to_drop_into_fish alternative solution], keeping bash as the system shell but having it exec fish when run interactively. | ||
Do note that even the following code is not full-proof, and should only be used with a thorough understanding. Prefer [[Fish#Setting fish as default shell|Setting fish as the default shell]]. | |||
Here is one solution, which launches fish unless the parent process is already fish: | Here is one solution, which launches fish unless the parent process is already fish: | ||
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For a more detailed explanation, please see the [https://wiki.archlinux.org/title/Fish#Modify_.bashrc_to_drop_into_fish aforementioned ArchWiki page]. | For a more detailed explanation, please see the [https://wiki.archlinux.org/title/Fish#Modify_.bashrc_to_drop_into_fish aforementioned ArchWiki page]. | ||
If you are using Lix, you can change the grep condition to <code>"fish\|nix-shell"</code> so the <code>nix-shell</code> command still works, this is necessary since Lix forks before spawning the shell process so the parent process ends up being nix-shell and not fish.<ref>https://git.lix.systems/lix-project/lix/issues/1131#issuecomment-18341</ref> | |||
↵If you still want to set fish as the login shell, see [[Command Shell#Changing the default shell]]. | |||
==== Running fish interactively with zsh as system shell on darwin ==== | |||
{{outdated|date=May 14, 2026|reason=I've updated the interactiveShellInit snippet that this section refers to. Either the following paragraph should be reworded or the provided zsh config be modified. For more context, please see my corresponding [https://wiki.nixos.org/w/index.php?title=Fish&oldid=31760 edit] and the linked talk page.|talk=Talk:Fish#Suggested_bashrc_in_Fish#Setting_fish_as_default_shell_needs_revision}} | |||
For | |||
Zsh users on darwin will need to use a modified version of the above snippet. As written, it presents two incompatibilities. First, being BSD-derived, MacOS's <code>ps</code> command accepts different options. Second, this is a script intended for bash, not zsh. MacOS uses zsh as its default shell. | Zsh users on darwin will need to use a modified version of the above snippet. As written, it presents two incompatibilities. First, being BSD-derived, MacOS's <code>ps</code> command accepts different options. Second, this is a script intended for bash, not zsh. MacOS uses zsh as its default shell. | ||
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}; | }; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Disable man page generation === | |||
Some users suffer from slow build due to fish enabling `documentation.man.generateCaches`. You may force false. | |||
documentation.man.generateCaches = false'';'' | |||
For home-manager users, man cache needs to be disabled in programs | |||
programs.man.generateCaches = false'';'' | |||
=== Show that you are in a nix-shell === | === Show that you are in a nix-shell === | ||