From 0c69ef6214a9e69424e1fd481a78e91990782be0 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <pngwjpgh@users.noreply.github.com>
Date: Thu, 8 Dec 2016 22:55:04 +0100
Subject: Update git-deploy script

---
 provider/posts/blog/git-deploy.md | 47 ++++++++++++++++++++++++++++++---------
 1 file changed, 36 insertions(+), 11 deletions(-)

diff --git a/provider/posts/blog/git-deploy.md b/provider/posts/blog/git-deploy.md
index 92d94fe..443f8d8 100644
--- a/provider/posts/blog/git-deploy.md
+++ b/provider/posts/blog/git-deploy.md
@@ -19,6 +19,7 @@ handled by `post-update`:
 ~~~{.sh}
 #!/usr/bin/env zsh
 
+
 touchedMaster=false
 
 for ref ($@); do
@@ -31,19 +32,43 @@ done
 $touchedMaster || exit 0
 
 {
-    tmpDir=$(mktemp -d)
-    delTmpDir() {
-        cd /
-        rm -rf ${tmpDir}
-    }
-    
-    trap delTmpDir EXIT
+    checkoutDir=/srv/git/checkouts/$(basename $(pwd))
+
+    print ${checkoutDir}
+
+    mkdir -p $(dirname ${checkoutDir})
+
+    unset GIT_DIR
 
-    git clone --branch master --depth 1 --single-branch file://$(pwd) ${tmpDir}
+    if [[ -d ${checkoutDir} ]]; then
+        git -C ${checkoutDir} fetch origin
+    else
+        rm -rf ${checkoutDir}
+        git clone --depth 1 file://$(pwd) ${checkoutDir}
+    fi
 
-    cd ${tmpDir}
-    umask 0022
-    nix-shell --run "dirty-haskell build && dirty-haskell deploy"
+    git -C ${checkoutDir} checkout -f origin/master
+
+    {
+        umask 0022
+        cd ${checkoutDir}
+
+        script=$(mktemp)
+        delScript() {
+            rm -v ${script}
+        }
+        trap delScript EXIT
+        chmod +x ${script}
+
+        >${script} <<EOF
+#! /usr/bin/env nix-shell
+#! nix-shell -i sh ${checkoutDir}/shell.nix
+
+dirty-haskell build && dirty-haskell deploy
+EOF
+        
+        ${script}
+    }
 } 2>&1 | stdbuf -o 0 tr '\r' '\n' | logger --id=$$ -p daemon.info -t dirty-haskell
 ~~~
 
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