diff --git a/pkgs/oizys/oizys-go/cmd/build.go b/pkgs/oizys/oizys-go/cmd/build.go
index 486ca91..c439d86 100644
--- a/pkgs/oizys/oizys-go/cmd/build.go
+++ b/pkgs/oizys/oizys-go/cmd/build.go
@@ -15,4 +15,5 @@ var buildCmd = &cobra.Command{
 func init() {
 	rootCmd.AddCommand(buildCmd)
 	buildCmd.Flags().BoolVar(&nom, "nom", false, "display result with nom")
+	buildCmd.Flags().BoolVar(&systemPath, "system-path", false, "show system-path drv")
 }
diff --git a/pkgs/oizys/oizys-go/cmd/ci.go b/pkgs/oizys/oizys-go/cmd/ci.go
index 968f88f..7c6ebbf 100644
--- a/pkgs/oizys/oizys-go/cmd/ci.go
+++ b/pkgs/oizys/oizys-go/cmd/ci.go
@@ -3,18 +3,18 @@ package cmd
 import (
 	"github.com/spf13/cobra"
 )
+
 // gh workflow run build.yml -F lockFile=@flake.lock
 
-var ciCmd= &cobra.Command{
+var ciCmd = &cobra.Command{
 	Use:   "ci",
 	Short: "offload build to GHA",
 	Run: func(cmd *cobra.Command, args []string) {
-    oizys.CI(args...)
+		oizys.CI(args...)
 	},
 }
 
-
 func init() {
 	rootCmd.AddCommand(ciCmd)
-	
+
 }
diff --git a/pkgs/oizys/oizys-go/cmd/dry.go b/pkgs/oizys/oizys-go/cmd/dry.go
index a5f5a6e..0649aef 100644
--- a/pkgs/oizys/oizys-go/cmd/dry.go
+++ b/pkgs/oizys/oizys-go/cmd/dry.go
@@ -12,8 +12,7 @@ var dryCmd = &cobra.Command{
 	},
 }
 
-
 func init() {
 	rootCmd.AddCommand(dryCmd)
-	
+
 }
diff --git a/pkgs/oizys/oizys-go/cmd/output.go b/pkgs/oizys/oizys-go/cmd/output.go
index 077adb4..fc018f7 100644
--- a/pkgs/oizys/oizys-go/cmd/output.go
+++ b/pkgs/oizys/oizys-go/cmd/output.go
@@ -14,8 +14,7 @@ var outputCmd = &cobra.Command{
 	},
 }
 
-
 func init() {
 	rootCmd.AddCommand(outputCmd)
-  outputCmd.Flags().BoolVar(&systemPath, "system-path", false, "show system-path drv")
+	outputCmd.Flags().BoolVar(&systemPath, "system-path", false, "show system-path drv")
 }
diff --git a/pkgs/oizys/oizys-go/cmd/root.go b/pkgs/oizys/oizys-go/cmd/root.go
index 15ab125..d66df90 100644
--- a/pkgs/oizys/oizys-go/cmd/root.go
+++ b/pkgs/oizys/oizys-go/cmd/root.go
@@ -57,7 +57,7 @@ func setupLogger() {
 	for k, v := range styles.Levels {
 		styles.Levels[k] = v.MaxWidth(10)
 	}
-  log.SetStyles(styles)
+	log.SetStyles(styles)
 }
 
 func init() {
diff --git a/pkgs/oizys/oizys-go/default.nix b/pkgs/oizys/oizys-go/default.nix
index 5cfc727..d1e4506 100644
--- a/pkgs/oizys/oizys-go/default.nix
+++ b/pkgs/oizys/oizys-go/default.nix
@@ -13,7 +13,7 @@ let
 in
 buildGoModule {
   pname = "oizys";
-  version = "d${mkDate self.lastModifiedDate}";
+  version = "${self.shortRev or "dirty"}";
 
   src = cleanSource ./.;
   vendorHash = "sha256-/JVXhXrU2np/ty7AGFy+LPZCo1NaLYl9NAyD9+FJYBI=";
diff --git a/pkgs/oizys/oizys-go/internal/oizys/main.go b/pkgs/oizys/oizys-go/internal/oizys/main.go
index 8d9a76e..a13d48b 100644
--- a/pkgs/oizys/oizys-go/internal/oizys/main.go
+++ b/pkgs/oizys/oizys-go/internal/oizys/main.go
@@ -62,7 +62,8 @@ func parseSystemPath(derivation map[string]Derivation) (string, error) {
 // nix derivation show `oizys output` | jq -r '.[].inputDrvs | with_entries(select(.key|match("system-path";"i"))) | keys | .[]'
 func (o *Oizys) getSystemPath() string {
 	cmd := exec.Command("nix", "derivation", "show", o.nixosConfigAttr())
-	log.Info("evaluating to get system-path")
+	logCmd(cmd)
+	// TODO: add spinner?
 	cmd.Stderr = os.Stderr
 	out, err := cmd.Output()
 	if err != nil {
@@ -189,6 +190,9 @@ func (p *packages) summary() {
 			Render(fmt.Sprint(len(p.names))),
 	)
 }
+func logCmd(cmd *exec.Cmd) {
+	log.Debugf("CMD: %s", strings.Join(cmd.Args, " "))
+}
 
 func (o *Oizys) git(rest ...string) *exec.Cmd {
 	args := []string{"-C", o.flake}
@@ -256,10 +260,6 @@ func showDryRunResult(nixOutput string, verbose bool) {
 	toFetch.show(verbose)
 }
 
-func logCmd(cmd *exec.Cmd) {
-	log.Debugf("CMD: %s %s", cmd.Path, strings.Join(cmd.Args, " "))
-}
-
 func (o *Oizys) NixDryRun(verbose bool, rest ...string) {
 	args := []string{
 		"build", o.nixosConfigAttr(), "--dry-run",
@@ -288,11 +288,11 @@ func (o *Oizys) NixosRebuild(subcmd string, rest ...string) {
 	if o.verbose {
 		cmd.Args = append(cmd.Args, "--print-build-logs")
 	}
-	logCmd(cmd)
 	runCommand(cmd)
 }
 
 func runCommand(cmd *exec.Cmd) {
+	logCmd(cmd)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	if err := cmd.Run(); err != nil {
@@ -308,6 +308,9 @@ func (o *Oizys) NixBuild(nom bool, rest ...string) {
 		cmdName = "nix"
 	}
 	cmd := exec.Command(cmdName, "build")
+	if o.systemPath {
+		cmd.Args = append(cmd.Args, fmt.Sprintf("%s^*", o.getSystemPath()))
+	}
 	cmd.Args = append(cmd.Args, rest...)
 	runCommand(cmd)
 }