Set revision from the building value

kachick · Jun 16, 2023 · ceaa32d · ceaa32d
1 parent 4d8a840
commit ceaa32d
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diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -0,0 +1,20 @@
+# How to develop
+
+## Setup
+
+1. Install [Nix](https://nixos.org/) package manager
+2. Run `nix-shell` or `nix-shell --command 'zsh'`
+3. You can use development tools
+
+```console
+> nix-shell
+(prepared bash)
+
+> go version
+go version go1.20.4 linux/amd64
+
+> dprint --version
+dprint 0.36.1
+
+> go build -ldflags "-X main.revision=$(git rev-parse --short HEAD)"
+```
diff --git a/nix-headbump.go b/nix-headbump.go
@@ -13,12 +13,14 @@ import (
 
 const version string = "0.1.0"
 
+var revision string
+
 func main() {
 	versionFlag := flag.Bool("version", false, "print the version of this program")
 	flag.Parse()
 
 	if *versionFlag {
-		fmt.Printf("%s\n", version)
+		fmt.Printf("%s\n", version+"("+revision+")")
 		return
 	}