aria2: add module

PR #1202

.github/CODEOWNERS

@@ -22,6 +22,8 @@
 
 /modules/misc/xdg-user-dirs.nix                       @pacien
 
+/modules/programs/aria2.nix                           @JustinLovinger
+
 /modules/programs/autorandr.nix                       @uvNikita
 
 /modules/programs/bash.nix                            @rycee

modules/misc/news.nix

@@ -1496,6 +1496,13 @@ in
           A new module is available: 'programs.i3status'
         '';
       }
+
+      {
+        time = "2020-05-03T11:21:42+00:00";
+        message = ''
+          A new module is available: 'programs.aria2'
+        '';
+      }
     ];
   };
 }

modules/modules.nix

@@ -45,6 +45,7 @@ let
     (loadModule ./programs/afew.nix { })
     (loadModule ./programs/alacritty.nix { })
     (loadModule ./programs/alot.nix { })
+    (loadModule ./programs/aria2.nix { })
     (loadModule ./programs/astroid.nix { })
     (loadModule ./programs/autorandr.nix { })
     (loadModule ./programs/bash.nix { })

modules/programs/aria2.nix

@@ -0,0 +1,61 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.aria2;
+
+  formatLine = n: v:
+    let
+      formatValue = v:
+        if builtins.isBool v then
+          (if v then "true" else "false")
+        else
+          toString v;
+    in "${n}=${formatValue v}";
+in {
+  meta.maintainers = [ hm.maintainers.justinlovinger ];
+
+  options.programs.aria2 = {
+    enable = mkEnableOption "aria2";
+
+    settings = mkOption {
+      type = with types; attrsOf (oneOf [ bool float int str ]);
+      default = { };
+      description = ''
+        Options to add to <filename>aria2.conf</filename> file.
+        See
+        <citerefentry>
+          <refentrytitle>aria2c</refentrytitle>
+          <manvolnum>1</manvolnum>
+        </citerefentry>
+        for options.
+      '';
+      example = literalExample ''
+        {
+          listen-port = 60000;
+          dht-listen-port = 60000;
+          seed-ratio = 1.0;
+          max-upload-limit = "50K";
+          ftp-pasv = true;
+        }
+      '';
+    };
+
+    extraConfig = mkOption {
+      type = types.lines;
+      default = "";
+      description = ''
+        Extra lines added to <filename>aria2.conf</filename> file.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ pkgs.aria2 ];
+
+    xdg.configFile."aria2/aria2.conf".text = concatStringsSep "\n" ([ ]
+      ++ mapAttrsToList formatLine cfg.settings
+      ++ optional (cfg.extraConfig != "") cfg.extraConfig);
+  };
+}

tests/default.nix

@@ -36,6 +36,7 @@ import nmt {
     ./modules/misc/fontconfig
     ./modules/programs/alacritty
     ./modules/programs/alot
+    ./modules/programs/aria2
     ./modules/programs/bash
     ./modules/programs/browserpass
     ./modules/programs/fish

tests/modules/programs/aria2/default.nix

@@ -0,0 +1 @@
+{ aria2-settings = ./settings.nix; }

tests/modules/programs/aria2/settings.nix

@@ -0,0 +1,41 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  config = {
+    programs.aria2 = {
+      enable = true;
+
+      settings = {
+        listen-port = 60000;
+        dht-listen-port = 60000;
+        seed-ratio = 1.0;
+        max-upload-limit = "50K";
+        ftp-pasv = true;
+      };
+
+      extraConfig = ''
+        # Extra aria2 configuration.
+      '';
+    };
+
+    nixpkgs.overlays =
+      [ (self: super: { aria2 = pkgs.writeScriptBin "dummy-aria2" ""; }) ];
+
+    nmt.script = ''
+      assertFileContent \
+        home-files/.config/aria2/aria2.conf \
+        ${
+          pkgs.writeText "aria2-expected-config.conf" ''
+            dht-listen-port=60000
+            ftp-pasv=true
+            listen-port=60000
+            max-upload-limit=50K
+            seed-ratio=1.000000
+            # Extra aria2 configuration.
+          ''
+        }
+    '';
+  };
+}