feat(workflows): use venv for python dependencies

Isolates Python dependencies within a virtual environment for all GitHub Actions workflows. This
     prevents conflicts with system-wide packages and ensures a consistent, reproducible environment for CI/CD processes.

- Replaces all 'pip install' commands with a 'venv'
     setup.

- Simplifies 'pip' commands by removing unnecessary flags.

- Adds 'venv/' to '.gitignore' to exclude virtual environment directories from source control.

Signed-off-by: Sombrio <[email protected]>

Author: sombraSoft

.github/workflows/github-actions-lint-tcl.yml

@@ -17,7 +17,9 @@ jobs:
 
       - name: Install Dependencies
         run: |
-          python3 -m pip install -U --user tclint==0.4.2
+          python3 -m venv ./venv
+          source ./venv/bin/activate
+          pip install tclint==0.4.2
 
       - name: Lint
         run: |

.github/workflows/github-actions-manual-update-rules.yml

@@ -22,6 +22,8 @@ jobs:
           python-version: "3.10"
       - name: Install Python Packages
         run: |
+          python3 -m venv ./venv
+          source ./venv/bin/activate
           pip install firebase-admin
       - name: Execute Python Script Update
         env:

.github/workflows/github-actions-update-rules.yml

@@ -24,6 +24,8 @@ jobs:
           python-version: "3.10"
       - name: Install Python Packages
         run: |
+          python3 -m venv ./venv
+          source ./venv/bin/activate
           pip install firebase-admin
       - name: Execute Python Script Update
         env:

.github/workflows/github-actions-yaml-test.yml

@@ -25,6 +25,8 @@ jobs:
         git diff --exit-code docs/user/FlowVariables.md
     - name: Run yamlfix check
       run: |
+        python3 -m venv ./venv
+        source ./venv/bin/activate
         pip install --quiet yamlfix==1.17.0
         yamlfix --version
         set -x

.gitignore

@@ -29,7 +29,6 @@ flow/rc_model.bin
 flow/*.tif.gz
 flow/*.def.v
 
-
 # RePlAce deps
 *PORT9.dat
 *POST9.dat
@@ -103,3 +102,6 @@ bazel-bin
 bazel-out
 bazel-OpenROAD-flow-scripts
 bazel-testlogs
+
+# python venv
+venv/