diff --git a/mk b/mk
index a5baa0f..4ed2350 100644
--- a/mk
+++ b/mk
@@ -25,7 +25,7 @@ const rm = (x) => {
 };
 const pj = JSON.parse(rf('package.json'));
 // v:version string - "x.y.z" where z is the number of commits since the beginning of the project
-const v = `${pj.version.replace(/\.0$/, '')}.${sh('git rev-list --count HEAD')}`;
+const v = "@version@";
 const isDyalogBuild = /^dyalog/.test(pj.name);
 const tasks = { };
 
@@ -36,8 +36,8 @@ const b = (f) => {
   const vi = {
     versionInfo: {
       version: v,
-      date: sh('git show -s HEAD --pretty=format:%ci'),
-      rev: sh('git rev-parse HEAD'),
+      date: 'unknown',
+      rev: 'nixpkgs',
     },
   };
   wf('_/version.js', `D=${JSON.stringify(vi)}`);
@@ -51,8 +51,7 @@ const incl = new RegExp('^$'
 const pkg = (x, y, f) => {
   rq('electron-packager')({
     dir: '.',
-    platform: x,
-    arch: y,
+    asar: true,
     tmpdir: '/tmp/ridebuild',
     out: `_/${pj.name}`,
     overwrite: true,
@@ -79,8 +78,8 @@ const pkg = (x, y, f) => {
       ProductName: 'RIDE',
       InternalName: 'RIDE',
     },
-  }).then(() => {
-    const d = `_/${pj.name}/${pj.productName}-${x}-${y}`;
+  }).then(paths => {
+    const d = paths[0];
     rm(`${d}/version`);
     fs.existsSync(`${d}/LICENSE`) && mv(`${d}/LICENSE`, `${d}/LICENSE.electron`);
     generateLicenses(`${d}/ThirdPartyNotices.txt`);
@@ -88,6 +87,7 @@ const pkg = (x, y, f) => {
   }, e => f(e));
 };
 
+const self = (f) => { b(e => (e ? f(e) : pkg(undefined, undefined, f))); };
 const l = (f) => { b(e => (e ? f(e) : pkg('linux', 'x64', f))); };
 const w = (f) => { b(e => (e ? f(e) : pkg('win32', 'ia32', f))); };
 const o = (f) => { b(e => (e ? f(e) : pkg('darwin', 'x64', f))); };
@@ -109,6 +109,7 @@ tasks.ma=ma; tasks.masarm = ma;
 tasks.a = a; tasks.arm = a;
 tasks.d = d; tasks.dist = d;
 tasks.c = c; tasks.clean = c;
+tasks.self = self;
 
 async.each(
   process.argv.length > 2 ? process.argv.slice(2) : ['build'],