Applying ./patches/001-use-external-ply.patch using plaintext: 
patching file pycparser/c_lexer.py
patching file pycparser/c_parser.py
patching file setup.py
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/ply/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/ply/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/ply/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/ply/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/ply/
Could not fetch URL https://pypi.org/simple/ply/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/ply/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
ERROR: Could not find a version that satisfies the requirement ply==3.11 (from versions: none)
ERROR: No matching distribution found for ply==3.11
make[3]: *** [Makefile:48: /builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a9+neon_musl_eabi/pypi/pycparser-2.21/.built] Error 1
time: package/feeds/packages/python-pycparser/compile#1.17#0.23#9.21