Combine package requirements into single file

.github/workflows/publish-installers.yml

@@ -59,13 +59,13 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ~\AppData\Local\pip\Cache
-          key: ${{ runner.os }}-pip-${{ hashFiles(format('package/requirements-{0}.txt', matrix.os)) }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('package/requirements-package.txt') }}
           restore-keys: ${{ runner.os }}-pip-
 
       - name: Install Dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r package/requirements-${{ matrix.os }}.txt
+          pip install -r package/requirements-package.txt
 
       - name: Build Package
         run: |

package/requirements-macos.txt

@@ -1,7 +0,0 @@
-apscheduler==3.8.0
-importlib-resources==5.2.2
-pyinstaller==4.5.1
-pyopenssl==21.0.0
-pycryptodomex==3.11.0
-pyobjc-framework-Cocoa==7.3
-pyobjc-core==7.3

package/requirements-package.txt

@@ -0,0 +1,10 @@
+apscheduler==3.8.0
+importlib-resources==5.2.2
+pyinstaller==4.5.1
+pyopenssl==21.0.0
+pycryptodomex==3.11.0
+
+pyobjc-framework-Cocoa==7.3; platform_system == "Darwin"
+pyobjc-core==7.3; platform_system == "Darwin"
+
+pywin32==302; platform_system == "Windows"

package/requirements-windows.txt

@@ -1,6 +0,0 @@
-apscheduler==3.8.0
-importlib-resources==5.2.2
-pyinstaller==4.5.1
-pyopenssl==21.0.0
-pycryptodomex==3.11.0
-pywin32==302