76 lines
2.3 KiB
Nix
76 lines
2.3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let cfg = config.programs.man;
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in {
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options = {
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programs.man = {
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enable = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Whether to enable manual pages and the {command}`man`
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command. This also includes "man" outputs of all
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`home.packages`.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.man;
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defaultText = literalExpression "pkgs.man";
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description = "The man package to use.";
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};
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generateCaches = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to generate the manual page index caches using
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{manpage}`mandb(8)`. This allows searching for a page or
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keyword using utilities like {manpage}`apropos(1)`.
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This feature is disabled by default because it slows down
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building. If you don't mind waiting a few more seconds when
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Home Manager builds a new generation, you may safely enable
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this option.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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home.packages = [ cfg.package ];
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home.extraOutputsToInstall = [ "man" ];
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# This is mostly copy/pasted/adapted from NixOS' documentation.nix.
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home.file = mkIf cfg.generateCaches {
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".manpath".text = let
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# Generate a directory containing installed packages' manpages.
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manualPages = pkgs.buildEnv {
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name = "man-paths";
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paths = config.home.packages;
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pathsToLink = [ "/share/man" ];
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extraOutputsToInstall = [ "man" ];
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ignoreCollisions = true;
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};
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# Generate a database of all manpages in ${manualPages}.
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manualCache = pkgs.runCommandLocal "man-cache" {
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nativeBuildInputs = [ cfg.package ];
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} ''
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# Generate a temporary man.conf so mandb knows where to
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# write cache files.
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echo "MANDB_MAP ${manualPages}/share/man $out" > man.conf
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# Run mandb to generate cache files:
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mandb -C man.conf --no-straycats --create \
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${manualPages}/share/man
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'';
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in ''
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MANDB_MAP ${config.home.profileDirectory}/share/man ${manualCache}
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'';
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};
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};
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}
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