147 lines
4.1 KiB
Nix
147 lines
4.1 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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}: let
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cfg = config.programs.direnv;
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in {
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options.programs.direnv = {
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enable = lib.mkEnableOption (lib.mdDoc ''
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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.mkPackageOptionMD pkgs "direnv" {};
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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 = lib.mdDoc ''
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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 (lib.mdDoc ''
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the hiding of direnv logging
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'');
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persistDerivations =
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(lib.mkEnableOption (lib.mdDoc ''
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setting keep-derivations and keep-outputs to true
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to prevent shells from getting garbage collected
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''))
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// {
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default = true;
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};
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loadInNixShell =
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lib.mkEnableOption (lib.mdDoc ''
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loading direnv in `nix-shell` `nix shell` or `nix develop`
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'')
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// {
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default = true;
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};
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nix-direnv = {
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enable =
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(lib.mkEnableOption (lib.mdDoc ''
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a faster, persistent implementation of use_nix and use_flake, to replace the built-in one
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''))
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// {
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default = true;
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};
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package = lib.mkPackageOptionMD pkgs "nix-direnv" {};
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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 = ''
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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 = ''
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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 = ''
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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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nix.settings = lib.mkIf cfg.persistDerivations {
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keep-outputs = true;
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keep-derivations = true;
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};
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environment = {
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systemPackages =
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if cfg.loadInNixShell then [cfg.package]
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else [
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#direnv has a fish library which sources direnv for some reason
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(cfg.package.overrideAttrs (old: {
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installPhase =
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(old.installPhase or "")
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+ ''
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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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}
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