1 files changed, 40 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/editors/emacs/elisp-packages/updater-emacs.nix b/nixpkgs/pkgs/applications/editors/emacs/elisp-packages/updater-emacs.nix
new file mode 100644
index 000000000000..0f69da2384d5
--- /dev/null
+++ b/nixpkgs/pkgs/applications/editors/emacs/elisp-packages/updater-emacs.nix
@@ -0,0 +1,40 @@
+let
+  pkgs = import ../../../../.. {};
+
+  emacsEnv = pkgs.emacs.pkgs.withPackages (epkgs: let
+
+    promise = epkgs.trivialBuild {
+      pname = "promise";
+      version = "1";
+      src = pkgs.fetchFromGitHub {
+        owner = "bendlas";
+        repo = "emacs-promise";
+        rev = "4da97087c5babbd8429b5ce62a8323b9b03c6022";
+        sha256 = "0yin7kj69g4zxs30pvk47cnfygxlaw7jc7chr3b36lz51yqczjsy";
+      };
+    };
+
+    semaphore = epkgs.trivialBuild {
+      pname = "semaphore";
+      version = "1";
+      packageRequires = [ promise ];
+      src = pkgs.fetchFromGitHub {
+        owner = "webnf";
+        repo = "semaphore.el";
+        rev = "93802cb093073bc6a6ccd797328dafffcef248e0";
+        sha256 = "09pfyp27m35sv340xarhld7xx2vv5fs5xj4418709iw6l6hpk853";
+      };
+    };
+
+  in [ promise semaphore ]);
+
+in pkgs.mkShell {
+  packages = [
+    pkgs.git
+    pkgs.nix
+    pkgs.bash
+    pkgs.nix-prefetch-git
+    pkgs.nix-prefetch-hg
+    emacsEnv
+  ];
+}