From 5cc87cf754737cea7d7367295e6c73a04816db7c Mon Sep 17 00:00:00 2001
From: Patrick Lehmann <Paebbels@gmail.com>
Date: Sat, 5 Nov 2022 23:57:24 +0100
Subject: [PATCH] Compute pacboy packages from requirements.txt

---
 .github/workflows/UnitTesting.yml | 62 ++++++++++++++++++++++++++++---
 1 file changed, 56 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/UnitTesting.yml b/.github/workflows/UnitTesting.yml
index 831db64..148cf3d 100644
--- a/.github/workflows/UnitTesting.yml
+++ b/.github/workflows/UnitTesting.yml
@@ -37,11 +37,7 @@ on:
       pacboy:
         description: 'MSYS2 dependencies to be installed through pacboy (pacman).'
         required: false
-        default: >-
-            python-pip:p
-            python-wheel:p
-            python-coverage:p
-            python-lxml:p
+        default: ""
         type: string
       mingw_requirements:
         description: 'Override Python dependencies to be installed through pip on MSYS2 (MINGW64) only.'
@@ -83,13 +79,67 @@ jobs:
       - name: ⏬ Checkout repository
         uses: actions/checkout@v3
 
+      - name: Install dependencies for compute step
+        if: matrix.system == 'msys2'
+        run: pip install pyTooling
+
+      - name: Compute pacman/pacboy packages
+        id: pacboy
+        if: matrix.system == 'msys2'
+        shell: python
+        run: |
+          from os      import getenv
+          from pathlib import Path
+          from re      import compile
+
+          from pyTooling.Packageing import loadRequirementsFile
+
+          requirementsFile = Path("${{ inputs.requirements }}")
+          dependencies = loadRequirementsFile(requirementsFile)
+
+          filter = {
+            "pip": "python-pip:p",
+            "wheel": "python-wheel:p",
+            "coverage": "python-coverage:p",
+            "lxml": "python-lxml:p",
+            "ruamel-yaml": "python-ruamel-yaml:p python-ruamel.yaml.clib:p",
+            "numpy": "python-numpy:p",
+          }
+
+          regExp = compile(r"([\w_\-\.]+)(\s*(?:[<>=]+)\s*)(\d+(?:.\d+)*)")
+
+          packages = []
+          print(f"Processing requirements ({len(dependencies)}):")
+          for dependency in dependencies:
+            match = regExp.match(dependency)
+            if not match:
+              print(f"  Wrong format: {dependency}")
+              continue
+
+            try:
+              package = match[0]
+              rewrite = filter[package]
+
+              print(f"  Found rewrite rule for '{package}': {rewrite}")
+              packages.append(rewrite)
+            except KeyError:
+              continue
+
+          # Write jobs to special file
+          github_output = Path(getenv("GITHUB_OUTPUT"))
+          print(f"GITHUB_OUTPUT: {github_output}")
+          with github_output.open("a+") as f:
+            f.write(f"pacboy_packages={' '.join(packages)}\n")
+
       - name: '🟦 Setup MSYS2'
         if: matrix.system == 'msys2'
         uses: msys2/setup-msys2@v2
         with:
           msystem: MINGW64
           update: true
-          pacboy: ${{ inputs.pacboy }}
+          pacboy: >-
+            ${{ steps.pacboy.outputs.pacboy_packages }}
+            ${{ inputs.pacboy }}
 
       - name: 🐍 Setup Python ${{ matrix.python }}
         if: matrix.system != 'msys2'