Show bash and other WSL-relevant info but not PATH

Only on native Windows systems (since this is for debugging WSL).

The Windows CI runners have WSL itself installed but no WSL systems
installed. So some of these commands may fail if they call the
bash.exe in the System32 directory, but this should still be
illuminating. Results after a WSL system is set up will likely be
more important, but doing this first allows for comparison.

The reason PATH directories are no longer listed is to decrease
noise.

Author: EliahKagan

Diff for: .github/workflows/cygwin-test.yml

@@ -73,7 +73,6 @@ jobs:
         python -c 'import sys; print(sys.platform)'
         python -c 'import os; print(os.name)'
         python -c 'import git; print(git.compat.is_win)'  # NOTE: Deprecated. Use os.name directly.
-        printenv PATH | tr ':' '\n'
 
     - name: Test with pytest
       run: |

Diff for: .github/workflows/pythonpackage.yml

@@ -65,7 +65,27 @@ jobs:
         python -c 'import sys; print(sys.platform)'
         python -c 'import os; print(os.name)'
         python -c 'import git; print(git.compat.is_win)'  # NOTE: Deprecated. Use os.name directly.
-        printenv PATH | tr ':' '\n'
+
+    # For debugging hook tests on native Windows systems that may have WSL.
+    - name: Show where bash.exe may be found
+      if: startsWith(matrix.os, 'windows')
+      run: |
+        set +e
+        type -a bash.exe
+        python -c 'import shutil; print(shutil.which("bash.exe"))'
+        bash.exe --version
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "--version"]); print(f"result: {p!r}")'
+        bash.exe -c 'echo "$BASH"'
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "-c", """echo "$BASH" """]); print(f"result: {p!r}")'
+        bash.exe -c 'echo "$BASH_VERSION"'
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "-c", """echo "$BASH_VERSION" """]); print(f"result: {p!r}")'
+        bash.exe -c 'printenv WSL_DISTRO_NAME'
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "-c", "printenv WSL_DISTRO_NAME"]); print(f"result: {p!r}")'
+        bash.exe -c 'ls -l /proc/sys/fs/binfmt_misc/WSLInterop'
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "-c", "ls -l /proc/sys/fs/binfmt_misc/WSLInterop"]); print(f"result: {p!r}")'
+        bash.exe -c 'uname -a'
+        python -c 'import subprocess; p = subprocess.run(["bash.exe", "-c", "uname -a"]); print(f"result: {p!r}")'
+      continue-on-error: true
 
     - name: Check types with mypy
       run: |