sbt: add new module

modules/programs/sbt.nix

@@ -0,0 +1,141 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  renderPlugin = plugin: ''
+    addSbtPlugin("${plugin.org}" % "${plugin.artifact}" % "${plugin.version}")
+  '';
+
+  renderCredential = cred: ''
+    credentials += Credentials("${cred.realm}", "${cred.host}", "${cred.user}", "${cred.passwordCommand}".!!)
+  '';
+
+  renderCredentials = creds: ''
+    import scala.sys.process._
+    ${concatStrings (map renderCredential creds)}'';
+
+  sbtTypes = {
+    plugin = types.submodule {
+      options = {
+        org = mkOption {
+          type = types.str;
+          description = "The organization the artifact is published under.";
+        };
+
+        artifact = mkOption {
+          type = types.str;
+          description = "The name of the artifact.";
+        };
+
+        version = mkOption {
+          type = types.str;
+          description = "The version of the plugin.";
+        };
+      };
+    };
+
+    credential = types.submodule {
+      options = {
+        realm = mkOption {
+          type = types.str;
+          description = "The realm of the repository you're authenticating to.";
+        };
+
+        host = mkOption {
+          type = types.str;
+          description =
+            "The hostname of the repository you're authenticating to.";
+        };
+
+        user = mkOption {
+          type = types.str;
+          description = "The user you're using to authenticate.";
+        };
+
+        passwordCommand = mkOption {
+          type = types.str;
+          description = ''
+            The command that provides the password or authentication token for
+            the repository.
+          '';
+        };
+      };
+    };
+  };
+
+  cfg = config.programs.sbt;
+
+in {
+  meta.maintainers = [ maintainers.kubukoz ];
+
+  options.programs.sbt = {
+    enable = mkEnableOption "sbt";
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.sbt;
+      defaultText = literalExample "pkgs.sbt";
+      description = "The package with sbt to be installed.";
+    };
+
+    baseConfigPath = mkOption {
+      type = types.str;
+      default = ".sbt/1.0";
+      description = "Where the plugins and credentials should be located.";
+    };
+
+    plugins = mkOption {
+      type = types.listOf (sbtTypes.plugin);
+      default = [ ];
+      example = literalExample ''
+        [
+          {
+            org = "net.virtual-void";
+            artifact = "sbt-dependency-graph";
+            version = "0.10.0-RC1";
+          }
+          {
+            org = "com.dwijnand";
+            artifact = "sbt-project-graph";
+            version = "0.4.0";
+          }
+        ]
+      '';
+      description = ''
+        A list of plugins to place in the sbt configuration directory.
+      '';
+    };
+
+    credentials = mkOption {
+      type = types.listOf (sbtTypes.credential);
+      default = [ ];
+      example = literalExample ''
+        [{
+          realm = "Sonatype Nexus Repository Manager";
+          host = "example.com";
+          user = "user";
+          passwordCommand = "pass show sbt/user@example.com";
+        }]
+      '';
+      description = ''
+        A list of credentials to define in the sbt configuration directory.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    { home.packages = [ cfg.package ]; }
+
+    (mkIf (cfg.plugins != [ ]) {
+      home.file."${cfg.baseConfigPath}/plugins/plugins.sbt".text =
+        concatStrings (map renderPlugin cfg.plugins);
+    })
+
+    (mkIf (cfg.credentials != [ ]) {
+      home.file."${cfg.baseConfigPath}/credentials.sbt".text =
+        renderCredentials cfg.credentials;
+    })
+  ]);
+}