mcfly: add module

PR #1452

.github/CODEOWNERS

@@ -71,6 +71,8 @@
 
 /modules/programs/matplotlib.nix                      @rprospero
 
+/modules/programs/mcfly.nix                           @marsam
+
 /modules/programs/mpv.nix                             @tadeokondrak
 
 /modules/programs/ne.nix                              @cwyc

modules/misc/news.nix

@@ -1635,6 +1635,13 @@ in
           A new module is available: 'services.kanshi'
         '';
       }
+
+      {
+        time = "2020-08-25T22:14:01+00:00";
+        message = ''
+          A new module is available: 'programs.mcfly'
+        '';
+      }
     ];
   };
 }

modules/modules.nix

@@ -86,6 +86,7 @@ let
     (loadModule ./programs/man.nix { })
     (loadModule ./programs/matplotlib.nix { })
     (loadModule ./programs/mbsync.nix { })
+    (loadModule ./programs/mcfly.nix { })
     (loadModule ./programs/mercurial.nix { })
     (loadModule ./programs/mpv.nix { })
     (loadModule ./programs/msmtp.nix { })

modules/programs/mcfly.nix

@@ -0,0 +1,77 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+
+  cfg = config.programs.mcfly;
+
+in {
+  meta.maintainers = [ maintainers.marsam ];
+
+  options.programs.mcfly = {
+    enable = mkEnableOption "mcfly";
+
+    keyScheme = mkOption {
+      type = types.enum [ "emacs" "vim" ];
+      default = "emacs";
+      description = ''
+        Key scheme to use.
+      '';
+    };
+
+    enableLightTheme = mkOption {
+      default = false;
+      type = types.bool;
+      description = ''
+        Whether to enable light mode theme.
+      '';
+    };
+
+    enableBashIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Bash integration.
+      '';
+    };
+
+    enableZshIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Zsh integration.
+      '';
+    };
+
+    enableFishIntegration = mkOption {
+      default = true;
+      type = types.bool;
+      description = ''
+        Whether to enable Fish integration.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    {
+      home.packages = [ pkgs.mcfly ];
+
+      programs.bash.initExtra = mkIf cfg.enableBashIntegration ''
+        source "${pkgs.mcfly}/share/mcfly/mcfly.bash"
+      '';
+
+      programs.zsh.initExtra = mkIf cfg.enableZshIntegration ''
+        source "${pkgs.mcfly}/share/mcfly/mcfly.zsh"
+      '';
+
+      programs.fish.shellInit = mkIf cfg.enableFishIntegration ''
+        source "${pkgs.mcfly}/share/mcfly/mcfly.fish"
+        mcfly_key_bindings
+      '';
+
+      home.sessionVariables.MCFLY_KEY_SCHEME = cfg.keyScheme;
+    }
+
+    (mkIf cfg.enableLightTheme { home.sessionVariables.MCFLY_LIGHT = "TRUE"; })
+  ]);
+}