Test nix builds

.github/workflows/ci-nix-build.yml

@@ -0,0 +1,28 @@
+name: ci_nix
+
+on:
+  push:
+    paths:
+      - 'src/**'
+      - 'test/**'
+      - 'conda/**'
+      - 'cmake/**'
+      - '.github/workflows/ci-nix-build.yml'
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+            submodules: recursive
+      - name: Install C++ dependencies
+        run: |
+          sudo apt update
+          sudo apt-get install --no-install-recommends \
+          git gcc g++ autoconf bison make cmake libfreetype6-dev mesa-common-dev libffi-dev libfontconfig1-dev patch
+
+      - name: Build ifcopenshell
+        run: |
+          cd nix && python3 build-all.py

.github/workflows/ci-py-only.yml

@@ -14,7 +14,7 @@ jobs:
   activate:
     runs-on: ubuntu-latest
     if: |
-      github.repository == 'IfcOpenShell/IfcOpenShell' &&
+      github.repository == 'Krande/IfcOpenShell' &&
       !contains(github.event.head_commit.message, 'skip ci')
     steps:
       - run: echo ok go