Bake git hash at install time so /version works without .git

setup.py writes GIT_HASH file during install. The version view
reads it at runtime instead of shelling out to git.

.gitignore

@@ -36,3 +36,5 @@ monero-wallet-cli.log
 monero-wallet-rpc.log
 monero-wallet-rpc.log*
 
+GIT_HASH
+

make_post_sell/views/version.py

@@ -1,23 +1,17 @@
-import subprocess
+import os
 
-from pyramid.response import Response
 from pyramid.view import view_config
 
-# Capture git hash once at process start.
+VERSION = "1.1.5"
+
+# Read git hash baked in by setup.py at install time.
+_hash_file = os.path.join(os.path.dirname(os.path.dirname(__file__)), "GIT_HASH")
 try:
-    GIT_HASH = (
-        subprocess.check_output(
-            ["git", "rev-parse", "--short", "HEAD"],
-            stderr=subprocess.DEVNULL,
-        )
-        .decode()
-        .strip()
-    )
+    with open(_hash_file) as f:
+        GIT_HASH = f.read().strip()
 except Exception:
     GIT_HASH = "unknown"
 
-VERSION = "1.1.5"
-
 
 @view_config(route_name="version", renderer="json")
 def version(request):

setup.py

@@ -1,4 +1,5 @@
 import os
+import subprocess
 from setuptools import setup, find_packages
 
 
@@ -27,6 +28,23 @@ here = os.path.abspath(os.path.dirname(__file__))
 with open(os.path.join(here, "README.rst"), "r", encoding="utf-8") as f:
     long_description = f.read()
 
+# Bake git hash into package so /version works without .git directory.
+git_hash_file = os.path.join(here, "make_post_sell", "GIT_HASH")
+try:
+    git_hash = (
+        subprocess.check_output(
+            ["git", "rev-parse", "--short", "HEAD"],
+            cwd=here,
+            stderr=subprocess.DEVNULL,
+        )
+        .decode()
+        .strip()
+    )
+    with open(git_hash_file, "w") as f:
+        f.write(git_hash)
+except Exception:
+    pass
+
 setup(
     name="make_post_sell",
     version="1.1.5",