diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
new file mode 100644
index 0000000..3aacb98
--- /dev/null
+++ b/.github/workflows/macos.yml
@@ -0,0 +1,16 @@
+name: macOS
+
+on: [push]
+
+jobs:
+  build:
+    name: Build
+    runs-on: macOS-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Fetch dependencies
+      run: go get -d ./...
+
+    - name: Build
+      run: go build
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
new file mode 100644
index 0000000..737d67c
--- /dev/null
+++ b/.github/workflows/ubuntu.yml
@@ -0,0 +1,16 @@
+name: Ubuntu
+
+on: [push]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Fetch dependencies
+      run: go get -d ./...
+
+    - name: Build
+      run: go build
diff --git a/README.md b/README.md
index acbd80f..c54f298 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ You need to **relogin** if you install virt-manager (libvirt) first time.
     $ appvm start chromium --verbose
     $ # ... long wait for first time, because we need to collect a lot of packages
 
-You can customize local settings in `$GOPATH/code.dumpstack.io/tools/appvm/nix/local.nix`.
+You can customize local settings in **~/.config/appvm/nix/local.nix**.
 
 Default hotkey to release cursor: ctrl+alt.
 
diff --git a/appvm.go b/appvm.go
index 2ec446f..d99c22f 100644
--- a/appvm.go
+++ b/appvm.go
@@ -106,11 +106,7 @@ func list(l *libvirt.Libvirt) {
 	}
 
 	for _, f := range files {
-		if f.Name() != "base.nix" &&
-			f.Name() != "local.nix" &&
-			f.Name() != "local.nix.template" {
-			fmt.Println("\t", f.Name()[0:len(f.Name())-4])
-		}
+		fmt.Println("\t", f.Name()[0:len(f.Name())-4])
 	}
 }
 
@@ -264,7 +260,6 @@ func stupidProgressBar() {
 }
 
 func start(l *libvirt.Libvirt, name string, verbose bool) {
-	// Currently binary-only installation is not supported, because we need *.nix configurations
 	appvmPath := configDir
 
 	// Copy templates
@@ -317,7 +312,7 @@ func autoBalloon(l *libvirt.Libvirt, memoryMin, adjustPercent uint64) {
 	table := tablewriter.NewWriter(os.Stdout)
 	table.SetHeader([]string{"Application VM", "Used memory", "Current memory", "Max memory", "New memory"})
 	for _, d := range domains {
-		if d.Name[0:5] == "appvm" {
+		if strings.HasPrefix(d.Name, "appvm_") {
 			name := d.Name[6:]
 
 			memoryUsedRaw, err := ioutil.ReadFile(os.Getenv("HOME") + "/appvm/" + name + "/.memory_used")
diff --git a/base.nix.go b/base.nix.go
index d8cdc54..f09dfb1 100644
--- a/base.nix.go
+++ b/base.nix.go
@@ -40,14 +40,6 @@ startup = do
   spawn "${pkgs.spice-vdagent}/bin/spice-vdagent"
   '';
 
-  environment.systemPackages = [ pkgs.bc ];
-  services.cron = {
-    enable = true;
-    systemCronJobs = [
-      "* * * * *      root    free -m | grep Mem | awk '{print $2 \"-\" $4}' | bc > /home/user/.memory_used"
-    ];
-  };
-
   systemd.services.home-user-build-xmonad = {
     description = "Link xmonad configuration";
     serviceConfig = {
@@ -89,5 +81,27 @@ startup = do
     };
     wantedBy = ["timers.target"];
   };
+
+  systemd.services."autoballoon" = {
+    serviceConfig = {
+      StartLimitBurst = 100;
+    };
+    script = ''
+      ${pkgs.procps}/bin/free -m | grep Mem | \
+        ${pkgs.gawk}/bin/awk '{print $2 "-" $4}' | \
+        ${pkgs.bc}/bin/bc > /home/user/.memory_used
+    '';
+  };
+
+  systemd.timers."autoballoon" = {
+    description = "Auto update resolution crutch";
+    timerConfig = {
+      OnBootSec = "1s";
+      OnUnitInactiveSec = "1s";
+      Unit = "autoballoon.service";
+      AccuracySec = "1us";
+    };
+    wantedBy = ["timers.target"];
+  };
 }
 `)
diff --git a/xml.go b/xml.go
index d6d6fbf..b2d93e5 100644
--- a/xml.go
+++ b/xml.go
@@ -6,7 +6,6 @@ import "fmt"
 // Believe me, you shouldn't.
 
 func generateXML(name, vmNixPath, reginfo, img, sharedDir string) string {
-	// TODO: Define XML in go
 	return fmt.Sprintf(xmlTmpl, "appvm_"+name, vmNixPath, vmNixPath, vmNixPath,
 		reginfo, img, sharedDir, sharedDir, sharedDir)
 }