From e6874c866d6aeeba482cfe33e7cfea08e2665003 Mon Sep 17 00:00:00 2001
From: Remo Rechkemmer <59358383+monacoremo@users.noreply.github.com>
Date: Wed, 20 May 2020 21:10:53 +0200
Subject: [PATCH] Fix UNKNOWN being shown as git commit hash (#1533)

Fixes https://github.com/PostgREST/postgrest/issues/1530
---
 CHANGELOG.md            | 2 ++
 src/PostgREST/Config.hs | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 749d3e8c1..cd1de8f18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 
+ - #1530, Fix how the PostgREST version is shown in the help text when the `.git` directory is not available - @monacoremo
+
 ## [7.0.1] - 2020-05-18
 
 ### Fixed
diff --git a/src/PostgREST/Config.hs b/src/PostgREST/Config.hs
index 0761f3a65..903be95dd 100644
--- a/src/PostgREST/Config.hs
+++ b/src/PostgREST/Config.hs
@@ -124,8 +124,12 @@ corsPolicy req = case lookup "origin" headers of
 -- | User friendly version number
 prettyVersion :: Text
 prettyVersion =
-  intercalate "." (map show $ versionBranch version)
-  <> " (" <> take 7 $(gitHash) <> ")"
+  intercalate "." (map show $ versionBranch version) <> gitRev
+  where
+    gitRev =
+      if $(gitHash) == "UNKNOWN"
+        then mempty
+        else " (" <> take 7 $(gitHash) <> ")"
 
 -- | Version number used in docs
 docsVersion :: Text