fix test pip deployments

.github/workflows/main.yml

@@ -3,6 +3,10 @@
 name: CI
 on: [push]
 
+env:
+  # useful for scripts & sometimes tests to know
+  CI: true
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -10,8 +14,6 @@ jobs:
     strategy:
       matrix:
         python-version: [3.6, 3.7, 3.8]
-    # TODO shit. matrix is going to prevent from twine deployments because of version conflicts??
-    # add 'and' clause??
 
     steps:
     # fuck me. https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#adding-a-system-path
@@ -32,7 +34,7 @@ jobs:
 
   pypi:
     runs-on: ubuntu-latest
-    needs: build
+    needs: [build] # add all other jobs here
 
     steps:
     - run: echo "::add-path::$HOME/.local/bin"

scripts/release

@@ -5,6 +5,7 @@ from pathlib import Path
 from subprocess import check_call
 import shutil
 
+is_ci = os.environ.get('CI') is not None
 
 def main():
     import argparse
@@ -19,6 +20,10 @@ def main():
     root = Path(__file__).absolute().parent.parent
     os.chdir(root) # just in case
 
+    if is_ci:
+        # see https://github.com/actions/checkout/issues/217
+        check_call('git fetch --prune --unshallow'.split())
+
     dist = root / 'dist'
     if dist.exists():
         shutil.rmtree(dist)