diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 88aaadec5..ddb09d150 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -80,6 +80,13 @@ jobs:
           #cache: pip
           #cache-dependency-path: 'requirements/*.pip'
 
+      - name: "Show environment"
+        run: |
+          set -xe
+          python -VV
+          python -m site
+          env
+
       - name: "Install dependencies"
         run: |
           echo matrix id: $MATRIX_ID
@@ -132,11 +139,16 @@ jobs:
           #cache: pip
           #cache-dependency-path: 'requirements/*.pip'
 
-      - name: "Install dependencies"
+      - name: "Show environment"
         run: |
           set -xe
           python -VV
           python -m site
+          env
+
+      - name: "Install dependencies"
+        run: |
+          set -xe
           python -m pip install -e .
           python igor.py zip_mods
 
@@ -171,10 +183,16 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: "Show environment"
+        run: |
+          set -xe
+          env
+
       - name: "Compute info for later steps"
         id: info
         run: |
           set -xe
+          env
           export SHA10=$(echo ${{ github.sha }} | cut -c 1-10)
           export SLUG=$(date +'%Y%m%d')_$SHA10
           export REPORT_DIR=reports/$SLUG/htmlcov
diff --git a/.github/workflows/python-nightly.yml b/.github/workflows/python-nightly.yml
index c4bffd278..fd4bdad53 100644
--- a/.github/workflows/python-nightly.yml
+++ b/.github/workflows/python-nightly.yml
@@ -79,6 +79,7 @@ jobs:
           python -m site
           python -m coverage debug sys
           python -m coverage debug pybehave
+          env
 
       - name: "Install dependencies"
         run: |
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index 9922b233b..d1c1f311a 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -92,11 +92,16 @@ jobs:
           cache: pip
           cache-dependency-path: 'requirements/*.pip'
 
-      - name: "Install dependencies"
+      - name: "Show environment"
         run: |
           set -xe
           python -VV
           python -m site
+          env
+
+      - name: "Install dependencies"
+        run: |
+          set -xe
           python -m pip install -r requirements/tox.pip
 
       - name: "Tox doc"
diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 9e1c3c1fa..e6742753e 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -79,14 +79,19 @@ jobs:
           #cache: pip
           #cache-dependency-path: 'requirements/*.pip'
 
-      - name: "Install dependencies"
+      - name: "Show environment"
         run: |
           set -xe
           python -VV
           python -m site
-          python -m pip install -r requirements/tox.pip
           # For extreme debugging:
           # python -c "import urllib.request as r; exec(r.urlopen('https://bit.ly/pydoctor').read())"
+          env
+
+      - name: "Install dependencies"
+        run: |
+          set -xe
+          python -m pip install -r requirements/tox.pip
 
       - name: "Run tox for ${{ matrix.python-version }}"
         run: |