diff --git a/.github/workflows/prebuild.yml b/.github/workflows/prebuild.yml
new file mode 100644
index 000000000..afed1cd02
--- /dev/null
+++ b/.github/workflows/prebuild.yml
@@ -0,0 +1,44 @@
+name: "Prebuild checks"
+
+on: [pull_request]
+
+jobs:
+
+  style_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - uses: cachix/install-nix-action@v13
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+        name: "Run script"
+      - run: nix-shell --run "poetry install"
+      - run: nix-shell --run "poetry run make style_check"
+
+  defs_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+        with:
+          submodules: "recursive"
+          fetch-depth: 0
+      - uses: cachix/install-nix-action@v13
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+        name: "Run script"
+      - run: nix-shell --run "poetry install"
+      - run: nix-shell --run "poetry run make defs_check"
+
+  gen_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.3.4
+        with:
+          submodules: "recursive"
+          fetch-depth: 0
+      - uses: cachix/install-nix-action@v13
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+        name: "Run script"
+      - run: nix-shell --run "poetry install"
+      - run: nix-shell --run "poetry run make gen_check"