120 lines
3.6 KiB
Nix
120 lines
3.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.xdg.mimeApps;
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strListOrSingleton = with types;
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coercedTo (either (listOf str) str) toList (listOf str);
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in {
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meta.maintainers = with maintainers; [ pacien ];
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options.xdg.mimeApps = {
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enable = 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 manage {file}`$XDG_CONFIG_HOME/mimeapps.list`.
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The generated file is read-only.
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'';
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};
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# descriptions from
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# https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-1.0.1.html
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associations.added = mkOption {
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type = types.attrsOf strListOrSingleton;
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default = { };
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example = literalExpression ''
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{
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"mimetype1" = [ "foo1.desktop" "foo2.desktop" "foo3.desktop" ];
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"mimetype2" = "foo4.desktop";
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}
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'';
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description = ''
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Defines additional associations of applications with
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mimetypes, as if the .desktop file was listing this mimetype
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in the first place.
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'';
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};
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associations.removed = mkOption {
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type = types.attrsOf strListOrSingleton;
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default = { };
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example = { "mimetype1" = "foo5.desktop"; };
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description = ''
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Removes associations of applications with mimetypes, as if the
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.desktop file was *not* listing this
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mimetype in the first place.
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'';
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};
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defaultApplications = mkOption {
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type = types.attrsOf strListOrSingleton;
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default = { };
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example = literalExpression ''
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{
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"mimetype1" = [ "default1.desktop" "default2.desktop" ];
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}
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'';
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description = ''
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The default application to be used for a given mimetype. This
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is, for instance, the one that will be started when
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double-clicking on a file in a file manager. If the
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application is no longer installed, the next application in
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the list is attempted, and so on.
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'';
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};
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};
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config = mkMerge [
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{
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# Given a package that installs .desktop files in the usual location,
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# return a mapping from mime types to lists of desktop file names. This is
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# suitable for use with `xdg.mimeApps.defaultApplications`.
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lib.xdg.mimeAssociations = let
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processLines = str:
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zipAttrs
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(filter (e: e != null) (map processLine (splitString "\n" str)));
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processLine = str:
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let
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entry = splitString ";" str;
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k = elemAt entry 0;
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v = elemAt entry 1;
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in if length entry == 2 then { ${k} = v; } else null;
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associations = ps:
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pkgs.runCommand "mime-assoc" { inherit ps; } ''
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for p in $ps ; do
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for path in "$p"/share/applications/*.desktop ; do
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name="''${path##*/}"
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sed -n -E "/^MimeType=/ { s/.*=//; s/;?$|;/;$name\n/g; p; }" "$path"
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done
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done > "$out"
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'';
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in p: processLines (builtins.readFile (associations p));
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}
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(mkIf cfg.enable {
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assertions =
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[ (hm.assertions.assertPlatform "xdg.mimeApps" pkgs platforms.linux) ];
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# Deprecated but still used by some applications.
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xdg.dataFile."applications/mimeapps.list".source =
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config.xdg.configFile."mimeapps.list".source;
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xdg.configFile."mimeapps.list".text =
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let joinValues = mapAttrs (n: concatStringsSep ";");
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in generators.toINI { } {
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"Added Associations" = joinValues cfg.associations.added;
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"Removed Associations" = joinValues cfg.associations.removed;
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"Default Applications" = joinValues cfg.defaultApplications;
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};
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})
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];
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}
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