[build] Use Ubuntu 20.04 and Python 3.9 for Linux ARM builds (#8638)

Authored by: bashonly

.github/workflows/build.yml

@@ -199,22 +199,24 @@ jobs:
             GITHUB_WORKFLOW: build
           githubToken: ${{ github.token }} # To cache image
           arch: ${{ matrix.architecture }}
-          distro: ubuntu18.04 # Standalone executable should be built on minimum supported OS
+          distro: ubuntu20.04 # Standalone executable should be built on minimum supported OS
           dockerRunArgs: --volume "${PWD}/repo:/repo"
           install: | # Installing Python 3.10 from the Deadsnakes repo raises errors
             apt update
-            apt -y install zlib1g-dev libffi-dev python3.8 python3.8-dev python3.8-distutils python3-pip
-            python3.8 -m pip install -U pip setuptools wheel
-            # Cannot access any files from the repo directory at this stage
-            python3.8 -m pip install -U Pyinstaller mutagen pycryptodomex websockets brotli certifi secretstorage cffi
+            apt -y install zlib1g-dev libffi-dev python3.9 python3.9-dev python3.9-distutils python3-pip \
+              python3-secretstorage  # Cannot build cryptography wheel in virtual armv7 environment
+            python3.9 -m pip install -U pip wheel 'setuptools>=71.0.2'
+            # XXX: Keep this in sync with pyproject.toml (it can't be accessed at this stage) and exclude secretstorage
+            python3.9 -m pip install -U Pyinstaller mutagen pycryptodomex brotli certifi cffi \
+              'requests>=2.32.2,<3' 'urllib3>=1.26.17,<3' 'websockets>=13.0'
 
           run: |
             cd repo
-            python3.8 devscripts/install_deps.py -o --include build
-            python3.8 devscripts/install_deps.py --include pyinstaller --include secretstorage  # Cached version may be out of date
-            python3.8 devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
-            python3.8 devscripts/make_lazy_extractors.py
-            python3.8 -m bundle.pyinstaller
+            python3.9 devscripts/install_deps.py -o --include build
+            python3.9 devscripts/install_deps.py --include pyinstaller  # Cached versions may be out of date
+            python3.9 devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
+            python3.9 devscripts/make_lazy_extractors.py
+            python3.9 -m bundle.pyinstaller
 
             if ${{ vars.UPDATE_TO_VERIFICATION && 'true' || 'false' }}; then
               arch="${{ (matrix.architecture == 'armv7' && 'armv7l') || matrix.architecture }}"
@@ -527,16 +529,20 @@ jobs:
           lock 2023.11.16 (?!win_x86_exe).+ Python 3\.7
           lock 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lock 2024.10.22 py2exe .+
+          lock 2024.10.22 linux_(?:armv7l|aarch64)_exe .+ glibc 2\.(?:[12]?\d|30)\b
           lockV2 yt-dlp/yt-dlp 2022.08.18.36 .+ Python 3\.6
           lockV2 yt-dlp/yt-dlp 2023.11.16 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp 2024.10.22 py2exe .+
+          lockV2 yt-dlp/yt-dlp 2024.10.22 linux_(?:armv7l|aarch64)_exe .+ glibc 2\.(?:[12]?\d|30)\b
           lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 py2exe .+
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 linux_(?:armv7l|aarch64)_exe .+ glibc 2\.(?:[12]?\d|30)\b
           lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.045052 py2exe .+
+          lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 linux_(?:armv7l|aarch64)_exe .+ glibc 2\.(?:[12]?\d|30)\b
           EOF
 
       - name: Sign checksum files

yt_dlp/update.py

@@ -158,13 +158,6 @@ def _get_system_deprecation():
             return EXE_MSG_TMPL.format('Windows 7/Server 2008 R2', 'issues/10086', STOP_MSG)
         return None
 
-    # Temporary until aarch64/armv7l build flow is bumped to Ubuntu 20.04 and Python 3.9
-    elif variant in ('linux_aarch64_exe', 'linux_armv7l_exe'):
-        libc_ver = version_tuple(os.confstr('CS_GNU_LIBC_VERSION').partition(' ')[2])
-        if libc_ver < (2, 31):
-            return EXE_MSG_TMPL.format('system glibc version < 2.31', 'pull/8638', STOP_MSG)
-        return None
-
     return f'Support for Python version {major}.{minor} has been deprecated. {PYTHON_MSG}'
 
 
@@ -357,7 +350,8 @@ def _process_update_spec(self, lockfile: str, resolved_tag: str):
                     continue
 
                 self._report_error(
-                    f'yt-dlp cannot be updated to {resolved_tag} since you are on an older Python version', True)
+                    f'yt-dlp cannot be updated to {resolved_tag} since you are on an older Python version '
+                    'or your operating system is not compatible with the requested build', True)
                 return None
 
         return resolved_tag