extract version from defs.bzl; gate buildhash on optimized build

.bazelrc

@@ -1,7 +1,5 @@
 common --enable_platform_specific_config
 common --experimental_repository_cache_hardlinks
-#common --symlink_prefix=.bazel/
-#common --experimental_no_product_name_out_symlink
 
 # specify python path on Windows for pyo3 compile
 build:windows --action_env="PYTHON_SYS_EXECUTABLE=c:\\python\\python.exe"

BUILD.bazel

@@ -1,8 +1,22 @@
+config_setting(
+    name = "release",
+    values = {
+        "compilation_mode": "opt",
+    },
+)
+
 genrule(
-    name = "buildinfo_gen",
+    name = "buildinfo",
+    srcs = ["//:defs.bzl"],
     outs = ["buildinfo.txt"],
-    cmd = "grep STABLE_ bazel-out/stable-status.txt > $@",
+    cmd = select({
+        "release": "$(location //scripts:buildinfo) $(location //:defs.bzl) bazel-out/stable-status.txt release > $@",
+        "//conditions:default": "$(location //scripts:buildinfo) $(location //:defs.bzl) bazel-out/stable-status.txt devel > $@",
+    }),
     stamp = 1,
+    tools = [
+        "//scripts:buildinfo",
+    ],
     visibility = ["//visibility:public"],
 )
 
@@ -11,3 +25,6 @@ alias(
     actual = "//ts:tsconfig.json",
     visibility = ["//visibility:public"],
 )
+
+# for version info
+exports_files(["defs.bzl"])

scripts/BUILD.bazel

@@ -0,0 +1,7 @@
+py_binary(
+    name = "buildinfo",
+    srcs = ["buildinfo.py"],
+    data = ["//:defs.bzl"],
+    stamp = 1,
+    visibility = ["//visibility:public"],
+)

scripts/buildinfo.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+import re
+import sys
+
+defs_file = sys.argv[1]
+stamp_file = sys.argv[2]
+release_mode = sys.argv[3] == "release"
+
+version_re = re.compile('anki_version = "(.*)"')
+
+# extract version number from defs.bzl
+for line in open(defs_file).readlines():
+    if ver := version_re.match(line):
+        print(f"STABLE_VERSION {ver.group(1)}")
+
+for line in open(stamp_file).readlines():
+    if line.startswith("STABLE_BUILDHASH"):
+        if release_mode:
+            print(line.strip())
+        else:
+            # if not in release mode, map buildhash to a consistent value
+            print("STABLE_BUILDHASH dev")

scripts/status.sh

@@ -1,8 +1,3 @@
 #!/bin/bash
 
-echo "STABLE_VERSION 2.1.36"
+echo "STABLE_BUILDHASH $(git rev-parse --short=8 HEAD || echo nogit)"
-if [ "$ANKI_RELEASE" != "" ]; then
-    echo "STABLE_BUILDHASH $(git rev-parse --short=8 HEAD || echo nogit)"
-else
-    echo "STABLE_BUILDHASH dev"
-fi