antigen: init at 2.2.1 (#27266)

* Added antigen

* Repaced link to releases

pkgs/shells/antigen/default.nix

@@ -0,0 +1,25 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  version = "2.2.1";
+  name = "antigen-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/zsh-users/antigen/releases/download/v${version}/antigen.zsh";
+    sha256 = "0s32280ak0gd0rr66g5dj6r5px0si8w47bcxlqfpaijg7i8xk1i7";
+  };
+  phases = "installPhase";
+
+  installPhase = ''
+    outdir=$out/share/antigen
+
+    mkdir -p $outdir
+    cp $src $outdir/antigen.zsh
+  '';
+
+  meta = {
+    description = "The plugin manager for zsh.";
+    homepage = http://antigen.sharats.me;
+    license = stdenv.lib.licenses.mit;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1227,6 +1227,8 @@ with pkgs;
     utillinux = utillinuxMinimal;
   };
 
+  antigen = callPackage ../shells/antigen { };
+
   apparix = callPackage ../tools/misc/apparix { };
 
   appdata-tools = callPackage ../tools/misc/appdata-tools { };