Add helper for install dev deps

Author: jamesls

.github/workflows/run-tests.yml

@@ -20,7 +20,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: |
-          pip install -r requirements-dev.txt --upgrade --upgrade-strategy eager -e .
+          make install-dev-deps
       - name: Run PRCheck
         run: make prcheck
   testsonly:

Makefile

@@ -56,3 +56,6 @@ doccheck:
 	$(MAKE) -C docs html
 
 prcheck: check pylint coverage doccheck typecheck
+
+install-dev-deps:
+	pip install -r requirements-dev.txt --upgrade --upgrade-strategy eager -e .