[feature/setuptools_cmake] Problems with rebuild and scikit-build, pr…

…einstalling some dependencies in CI

.github/workflows/all_push.yml

@@ -31,6 +31,7 @@ jobs:
       - name: Install
         run: |
           cmake --install ${{github.workspace}}/build
+          python -m pip install "scikit-build-core"
           python -m pip install ".[dev]" --no-build-isolation
       - name: Test C++
         env:

Makefile

@@ -2,11 +2,19 @@
 # BUILD
 ###############################################################################
 
-# Build the C++/Python package will try to reuse existing build directory
+# Build the C++/Python package from scratch (ignore existing build dir)
 .PHONY: build
 build:
+	python -m pip install -e ".[dev]"
+
+# Build the C++/Python package will try to reuse existing build directory, will
+# not always work on a fresh checkout bc it requires prereqs to be installed.
+# See https://scikit-build-core.readthedocs.io/en/latest/configuration.html#editable-installs
+.PHONY: rebuild
+rebuild:
 	python -m pip install -e ".[dev]" --no-build-isolation
 
+
 ###############################################################################
 # DOCS
 ###############################################################################