151 lines
4.2 KiB
Nix
151 lines
4.2 KiB
Nix
{
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lib,
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config,
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pkgs,
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...
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}:
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let
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cfg = config.programs.direnv;
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enabledOption =
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x:
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lib.mkEnableOption x
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// {
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default = true;
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example = false;
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};
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in
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{
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options.programs.direnv = {
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enable = lib.mkEnableOption ''
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direnv integration. Takes care of both installation and
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setting up the sourcing of the shell. Additionally enables nix-direnv
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integration. Note that you need to logout and login for this change to apply
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'';
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package = lib.mkPackageOption pkgs "direnv" { };
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enableBashIntegration = enabledOption ''
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Bash integration
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'';
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enableZshIntegration = enabledOption ''
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Zsh integration
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'';
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enableFishIntegration = enabledOption ''
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Fish integration
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'';
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direnvrcExtra = lib.mkOption {
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type = lib.types.lines;
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default = "";
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example = ''
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export FOO="foo"
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echo "loaded direnv!"
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'';
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description = ''
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Extra lines to append to the sourced direnvrc
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'';
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};
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silent = lib.mkEnableOption ''
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the hiding of direnv logging
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'';
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loadInNixShell = enabledOption ''
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loading direnv in `nix-shell` `nix shell` or `nix develop`
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'';
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nix-direnv = {
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enable = enabledOption ''
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a faster, persistent implementation of use_nix and use_flake, to replace the builtin one
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'';
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package = lib.mkOption {
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default = pkgs.nix-direnv.override { nix = config.nix.package; };
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defaultText = "pkgs.nix-direnv";
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type = lib.types.package;
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description = ''
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The nix-direnv package to use
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'';
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};
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};
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};
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config = lib.mkIf cfg.enable {
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programs = {
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zsh.interactiveShellInit = lib.mkIf cfg.enableZshIntegration ''
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if ${lib.boolToString cfg.loadInNixShell} || printenv PATH | grep -vqc '/nix/store'; then
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eval "$(${lib.getExe cfg.package} hook zsh)"
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fi
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'';
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#$NIX_GCROOT for "nix develop" https://github.com/NixOS/nix/blob/6db66ebfc55769edd0c6bc70fcbd76246d4d26e0/src/nix/develop.cc#L530
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#$IN_NIX_SHELL for "nix-shell"
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bash.interactiveShellInit = lib.mkIf cfg.enableBashIntegration ''
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if ${lib.boolToString cfg.loadInNixShell} || [ -z "$IN_NIX_SHELL$NIX_GCROOT$(printenv PATH | grep '/nix/store')" ] ; then
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eval "$(${lib.getExe cfg.package} hook bash)"
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fi
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'';
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fish.interactiveShellInit = lib.mkIf cfg.enableFishIntegration ''
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if ${lib.boolToString cfg.loadInNixShell};
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or printenv PATH | grep -vqc '/nix/store';
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${lib.getExe cfg.package} hook fish | source
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end
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'';
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};
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environment = {
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systemPackages = [
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# direnv has a fish library which automatically sources direnv for some reason
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# I don't see any harm in doing this if we're sourcing it with fish.interactiveShellInit
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(pkgs.symlinkJoin {
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inherit (cfg.package) name;
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paths = [ cfg.package ];
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postBuild = ''
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rm -rf $out/share/fish
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'';
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})
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];
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variables = {
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DIRENV_CONFIG = "/etc/direnv";
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DIRENV_LOG_FORMAT = lib.mkIf cfg.silent "";
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};
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etc = {
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"direnv/direnvrc".text = ''
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${lib.optionalString cfg.nix-direnv.enable ''
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#Load nix-direnv
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source ${cfg.nix-direnv.package}/share/nix-direnv/direnvrc
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''}
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#Load direnvrcExtra
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${cfg.direnvrcExtra}
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#Load user-configuration if present (~/.direnvrc or ~/.config/direnv/direnvrc)
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direnv_config_dir_home="''${DIRENV_CONFIG_HOME:-''${XDG_CONFIG_HOME:-$HOME/.config}/direnv}"
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if [[ -f $direnv_config_dir_home/direnvrc ]]; then
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source "$direnv_config_dir_home/direnvrc" >&2
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elif [[ -f $HOME/.direnvrc ]]; then
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source "$HOME/.direnvrc" >&2
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fi
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unset direnv_config_dir_home
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'';
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"direnv/lib/zz-user.sh".text = ''
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direnv_config_dir_home="''${DIRENV_CONFIG_HOME:-''${XDG_CONFIG_HOME:-$HOME/.config}/direnv}"
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for lib in "$direnv_config_dir_home/lib/"*.sh; do
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source "$lib"
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done
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unset direnv_config_dir_home
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'';
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};
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};
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};
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meta.maintainers = with lib.maintainers; [ gerg-l ];
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}
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