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73 lines
2.6 KiB
73 lines
2.6 KiB
{ config, pkgs, lib, ... }:
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let
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cfg = config.documentation.man.man-db;
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in
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{
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options = {
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documentation.man.man-db = {
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enable = lib.mkEnableOption "man-db as the default man page viewer" // {
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default = config.documentation.man.enable;
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defaultText = lib.literalExpression "config.documentation.man.enable";
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example = false;
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};
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manualPages = lib.mkOption {
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type = lib.types.path;
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default = pkgs.buildEnv {
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name = "man-paths";
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paths = config.environment.systemPackages;
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pathsToLink = [ "/share/man" ];
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extraOutputsToInstall = [ "man" ]
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++ lib.optionals config.documentation.dev.enable [ "devman" ];
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ignoreCollisions = true;
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};
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defaultText = lib.literalMD "all man pages in {option}`config.environment.systemPackages`";
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description = lib.mdDoc ''
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The manual pages to generate caches for if {option}`documentation.man.generateCaches`
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is enabled. Must be a path to a directory with man pages under
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`/share/man`; see the source for an example.
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Advanced users can make this a content-addressed derivation to save a few rebuilds.
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'';
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};
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package = lib.mkOption {
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type = lib.types.package;
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default = pkgs.man-db;
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defaultText = lib.literalExpression "pkgs.man-db";
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description = ''
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The <literal>man-db</literal> derivation to use. Useful to override
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configuration options used for the package.
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'';
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};
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};
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};
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imports = [
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(lib.mkRenamedOptionModule [ "documentation" "man" "manualPages" ] [ "documentation" "man" "man-db" "manualPages" ])
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];
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config = lib.mkIf cfg.enable {
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environment.systemPackages = [ cfg.package ];
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environment.etc."man_db.conf".text =
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let
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manualCache = pkgs.runCommandLocal "man-cache" { } ''
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echo "MANDB_MAP ${cfg.manualPages}/share/man $out" > man.conf
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${cfg.package}/bin/mandb -C man.conf -psc >/dev/null 2>&1
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'';
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in
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''
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# Manual pages paths for NixOS
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MANPATH_MAP /run/current-system/sw/bin /run/current-system/sw/share/man
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MANPATH_MAP /run/wrappers/bin /run/current-system/sw/share/man
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${lib.optionalString config.documentation.man.generateCaches ''
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# Generated manual pages cache for NixOS (immutable)
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MANDB_MAP /run/current-system/sw/share/man ${manualCache}
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''}
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# Manual pages caches for NixOS
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MANDB_MAP /run/current-system/sw/share/man /var/cache/man/nixos
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'';
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};
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}
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