alps: init at 2021-09-29

this commit adds the alps webmail package (https://git.sr.ht/~migadu/alps/)

pkgs/servers/alps/default.nix

@@ -0,0 +1,24 @@
+{ lib, buildGoModule, fetchFromSourcehut }:
+
+buildGoModule rec {
+  pname = "alps";
+  version = "2021-09-29";
+
+  src = fetchFromSourcehut {
+    owner = "~migadu";
+    repo = "alps";
+    rev = "d4c35f3c3157bece8e50fd95f2ee1081be30d7ae";
+    sha256 = "sha256-xKfRLdfeD7lWdmC0iiq4dOIv2SmzbKH7HcAISCJgdug=";
+  };
+
+  vendorSha256 = "sha256-8fmbv5uPRfzUqsYU95YzsnuFkq4cwj+LN2X3W/yBHyA=";
+
+  proxyVendor = true;
+
+  meta = with lib; {
+    description = "A simple and extensible webmail.";
+    homepage = "https://git.sr.ht/~migadu/alps";
+    license = licenses.mit;
+    maintainers = with maintainers; [ gordias ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -20764,6 +20764,8 @@ with pkgs;
 
   alerta-server = callPackage ../servers/monitoring/alerta { };
 
+  alps = callPackage ../servers/alps {};
+
   apacheHttpd_2_4 = callPackage ../servers/http/apache-httpd/2.4.nix { };
   apacheHttpd = apacheHttpd_2_4;