From abad30d9cf4f040b492ce5ca7313038981b1da1c Mon Sep 17 00:00:00 2001
From: Doron Behar <doron.behar@gmail.com>
Date: Tue, 7 Sep 2021 20:52:46 +0300
Subject: [PATCH] First trial in a nix flake update CI

---
 .gitlab-ci.yml | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 .gitlab-ci.yml

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..b27da45
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,22 @@
+default:
+    image: nixpkgs/nix-flakes
+
+update-nix-flakes:
+    # Based on: https://forum.gitlab.com/t/git-push-from-inside-a-gitlab-runner/30554/5
+    before_script:
+        - eval `ssh-agent -s`
+        - mkdir --mode=700 -p ~/.ssh
+        - ssh-keyscan "$CI_SERVER_HOST" >> ~/.ssh/known_hosts
+        - echo "$SSH_PUBLIC_KEY" >> ~/.ssh/id_rsa.pub
+        - echo "${SSH_PRIVATE_KEY}" | ssh-add -
+    script:
+        - git config --global user.email "nix-matlab-CI@doronbehar.com"
+        - git config --global user.name "Nix Matlab CI"
+        - git remote add ci ssh://git@$CI_SERVER_HOST/$CI_PROJECT_PATH.git
+        - type nix
+        - nix --version
+        - nix flake update
+        - git add .
+        - git status
+        - git commit --message "[skip ci] Automatic nix flake update by CI" || echo "No changes, nothing to commit!"
+        - git push ci HEAD:$CI_COMMIT_REF_NAME # Pushes to the same branch as the trigger