From 8268de92c46c2896c22847d34b1f650fb7c00773 Mon Sep 17 00:00:00 2001
From: Igor Ramazanov <igor.ramazanov@magine.com>
Date: Tue, 11 Mar 2025 17:46:02 +0000
Subject: [PATCH] feat: do not rely on `git` for versioning

It causes lots of pain when building with `nix` for a local `flake.nix`.

Not sure if it's a good general solution:
* now it requires a manual step of updating `./version` on each release.
* we're losing commit hash abbreviation, like `0.5.3-5-gbe5a291`

I guess, this can be fixed by installing git-pre-commit-hook, but even
then it'd be wrong, because the output of `git describe --tags --always`
won't be the same before and after commit.
---
 flake.nix       | 3 +--
 nix/agent.nix   | 3 +--
 nix/package.nix | 6 +-----
 version         | 1 +
 vite.config.ts  | 5 ++---
 5 files changed, 6 insertions(+), 12 deletions(-)
 create mode 100644 version

diff --git a/flake.nix b/flake.nix
index 5da87e9..9572c20 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,10 +28,9 @@ rec {
       };
     in {
       formatter = pkgs.alejandra;
-      packages = rec {
+      packages = {
         headplane = pkgs.callPackage ./nix/package.nix {};
         headplane-agent = pkgs.callPackage ./nix/agent.nix {};
-        default = headplane;
       };
       devShell = pkgs.devshell.mkShell rec {
         name = description;
diff --git a/nix/agent.nix b/nix/agent.nix
index 2ac815f..6948b0a 100644
--- a/nix/agent.nix
+++ b/nix/agent.nix
@@ -1,8 +1,7 @@
 {buildGoModule}:
 buildGoModule {
   pname = "hp_agent";
-  # TODO: take the latest `git tag`, if commits do not match, append `-SNAPSHOT`.
-  version = "0.5.3";
+  version = builtins.replaceStrings ["\n"] [""] (builtins.readFile ../version);
   src = ../.;
   vendorHash = "sha256-G0kahv3mPTL/mxU2U+0IytJaFVPXMbMBktbLMfM0BO8=";
   ldflags = ["-s" "-w"];
diff --git a/nix/package.nix b/nix/package.nix
index 7dbb035..7e5d9a3 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -9,11 +9,7 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "headplane";
-
-  # TODO: take the latest `git tag`, if commits do not match, append `-SNAPSHOT`.
-  version = "0.5.3";
-
-  # TODO: requires `.git` directory.
+  version = builtins.replaceStrings ["\n"] [""] (builtins.readFile ../version);
   src = ../.;
 
   nativeBuildInputs = [
diff --git a/version b/version
new file mode 100644
index 0000000..f5633c8
--- /dev/null
+++ b/version
@@ -0,0 +1 @@
+0.5.3-SNAPSHOT
diff --git a/vite.config.ts b/vite.config.ts
index 1f6ca48..e59bb8a 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -2,7 +2,7 @@ import { reactRouter } from '@react-router/dev/vite';
 import { defineConfig } from 'vite';
 import babel from 'vite-plugin-babel';
 import tsconfigPaths from 'vite-tsconfig-paths';
-import { execSync } from 'node:child_process';
+import fs from 'node:fs';
 import tailwindcss from 'tailwindcss';
 import autoprefixer from 'autoprefixer';
 
@@ -11,8 +11,7 @@ if (prefix.endsWith('/')) {
 	throw new Error('Prefix must not end with a slash');
 }
 
-// Load the version via git tags
-const version = execSync('git describe --tags --always').toString().trim();
+const version = fs.readFileSync("version", "utf8");
 if (!version) {
 	throw new Error('Unable to execute git describe');
 }