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nixos/fish: allow disabling completion generation

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(cherry picked from commit 3045cecacf)
This commit is contained in:
Sizhe Zhao 2025-06-20 13:08:22 +08:00 • committed by github-actions[bot]
parent 89e94ea7a7
commit c567580239
1 changed files with 24 additions and 16 deletions
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40
nixos/modules/programs/fish.nix
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@ -72,6 +72,11 @@ in
''; '';
}; };
generateCompletions = lib.mkEnableOption "generating completion files from man pages" // {
default = true;
example = false;
};
vendor.config.enable = lib.mkOption { vendor.config.enable = lib.mkOption {
type = lib.types.bool; type = lib.types.bool;
default = true; default = true;
@ -247,7 +252,7 @@ in
''; '';
} }
{ (lib.mkIf cfg.generateCompletions {
etc."fish/generated_completions".source = etc."fish/generated_completions".source =
let let
patchedGenerator = pkgs.stdenv.mkDerivation { patchedGenerator = pkgs.stdenv.mkDerivation {
@ -297,7 +302,7 @@ in
ignoreCollisions = true; ignoreCollisions = true;
paths = builtins.map generateCompletions config.environment.systemPackages; paths = builtins.map generateCompletions config.environment.systemPackages;
}; };
} })
# include programs that bring their own completions # include programs that bring their own completions
{ {
@ -318,20 +323,23 @@ in
} }
]; ];
programs.fish.interactiveShellInit = '' programs.fish.interactiveShellInit =
# add completions generated by NixOS to $fish_complete_path lib.optionalString cfg.generateCompletions ''
begin # add completions generated by NixOS to $fish_complete_path
# joins with null byte to accommodate all characters in paths, then respectively gets all paths before (exclusive) / after (inclusive) the first one including "generated_completions", begin
# splits by null byte, and then removes all empty lines produced by using 'string' # joins with null byte to accommodate all characters in paths, then respectively gets all paths before (exclusive) / after (inclusive) the first one including "generated_completions",
set -l prev (string join0 $fish_complete_path | string match --regex "^.*?(?=\x00[^\x00]*generated_completions.*)" | string split0 | string match -er ".") # splits by null byte, and then removes all empty lines produced by using 'string'
set -l post (string join0 $fish_complete_path | string match --regex "[^\x00]*generated_completions.*" | string split0 | string match -er ".") set -l prev (string join0 $fish_complete_path | string match --regex "^.*?(?=\x00[^\x00]*generated_completions.*)" | string split0 | string match -er ".")
set fish_complete_path $prev "/etc/fish/generated_completions" $post set -l post (string join0 $fish_complete_path | string match --regex "[^\x00]*generated_completions.*" | string split0 | string match -er ".")
end set fish_complete_path $prev "/etc/fish/generated_completions" $post
# prevent fish from generating completions on first run end
if not test -d $__fish_user_data_dir/generated_completions ''
${pkgs.coreutils}/bin/mkdir $__fish_user_data_dir/generated_completions + ''
end # prevent fish from generating completions on first run
''; if not test -d $__fish_user_data_dir/generated_completions
${pkgs.coreutils}/bin/mkdir $__fish_user_data_dir/generated_completions
end
'';
}; };
meta.maintainers = with lib.maintainers; [ sigmasquadron ]; meta.maintainers = with lib.maintainers; [ sigmasquadron ];