harcode git author in all commands

This makes it easier to locally test the commands without affecting ~/.gitconfig

ci/lib/setup-git.sh

@@ -1,5 +0,0 @@
-# only source this file
-# ==================================================
-
-git config --global user.name "Nur a bot"
-git config --global user.email "joerg.nur-bot@thalheim.io"

ci/update-nur-search.sh

@@ -5,7 +5,6 @@ set -eu -o pipefail # Exit with nonzero exit code if anything fails
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-source ${DIR}/lib/setup-git.sh
 set -x
 
 
@@ -26,7 +25,7 @@ nix run '(import ./release.nix {})' -c nur index nur-combined > nur-search/data/
 cd nur-search
 if [[ ! -z "$(git diff --exit-code)" ]]; then
     git add ./data/packages.json
-    git commit -m "automatic update package.json"
+    git commit --author "Nur a bot <joerg.nur-bot@thalheim.io>" -m "automatic update package.json"
     git pull --rebase origin master
     git push origin master
     nix-shell --run "make clean && make && make publish"

ci/update-nur.sh

@@ -23,7 +23,7 @@ if [[ -z "$(git diff --exit-code)" ]]; then
   echo "No changes to the output on this push; exiting."
 else
   git add --all repos.json*
-  git commit -m "automatic update"
+  git commit --author "Nur a bot <joerg.nur-bot@thalheim.io>" -m "automatic update"
   # in case we are getting overtaken by a different job
   git pull --rebase origin master
   git push "https://$API_TOKEN_GITHUB@github.com/nix-community/NUR" HEAD:master

nur/combine.py

@@ -42,7 +42,16 @@ def commit_files(files: List[str], message: str) -> None:
     cmd.extend(files)
     subprocess.check_call(cmd)
     if repo_changed():
-        subprocess.check_call(["git", "commit", "-m", message])
+        subprocess.check_call(
+            [
+                "git",
+                "commit",
+                "--author",
+                "Nur a bot <joerg.nur-bot@thalheim.io>",
+                "-m",
+                message,
+            ]
+        )
 
 
 def commit_repo(repo: Repo, message: str, path: Path) -> Repo: