Drop CPython 3.5 and add CPython 3.10

docker/Dockerfile

@@ -114,12 +114,6 @@ RUN export OPENSSL_ROOT=openssl-1.1.1k && \
 COPY build_scripts/build-cpython.sh /build_scripts/
 
 
-FROM build_cpython AS build_cpython35
-COPY build_scripts/cpython-pubkeys.txt /build_scripts/cpython-pubkeys.txt
-RUN manylinux-entrypoint gpg --import /build_scripts/cpython-pubkeys.txt
-RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.5.10
-
-
 FROM build_cpython AS build_cpython36
 COPY build_scripts/cpython-pubkeys.txt /build_scripts/cpython-pubkeys.txt
 RUN manylinux-entrypoint gpg --import /build_scripts/cpython-pubkeys.txt
@@ -144,12 +138,18 @@ RUN manylinux-entrypoint gpg --import /build_scripts/ambv-pubkey.txt
 RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.9.4
 
 
+FROM build_cpython AS build_cpython310
+COPY build_scripts/cpython-pubkey-310-311.txt /build_scripts/cpython-pubkey-310-311.txt
+RUN manylinux-entrypoint gpg --import /build_scripts/cpython-pubkey-310-311.txt
+RUN manylinux-entrypoint /build_scripts/build-cpython.sh 3.10.0b1
+
+
 FROM build_cpython AS all_cpython
-COPY --from=build_cpython35 /opt/_internal /opt/_internal/
 COPY --from=build_cpython36 /opt/_internal /opt/_internal/
 COPY --from=build_cpython37 /opt/_internal /opt/_internal/
 COPY --from=build_cpython38 /opt/_internal /opt/_internal/
 COPY --from=build_cpython39 /opt/_internal /opt/_internal/
+COPY --from=build_cpython310 /opt/_internal /opt/_internal/
 RUN hardlink -cv /opt/_internal
 
 

docker/build_scripts/build-cpython.sh

@@ -34,18 +34,10 @@ PREFIX="/opt/_internal/cpython-${CPYTHON_VERSION}"
 mkdir -p ${PREFIX}/lib
 # configure with hardening options only for the interpreter & stdlib C extensions
 # do not change the default for user built extension (yet?)
-if [ "${CPYTHON_VERSION:0:4}" == "3.5." ]; then
-	./configure \
-		CFLAGS_NODIST="${MANYLINUX_CFLAGS} ${MANYLINUX_CPPFLAGS}" \
-		--prefix=${PREFIX} --disable-shared --with-ensurepip=no > /dev/null
-	# those are not picked-up by distutils in CPython 3.5 which has no LDFLAGS_NODIST option in configure
-	export LDFLAGS="${MANYLINUX_LDFLAGS}"
-else
-	./configure \
-		CFLAGS_NODIST="${MANYLINUX_CFLAGS} ${MANYLINUX_CPPFLAGS}" \
-		LDFLAGS_NODIST="${MANYLINUX_LDFLAGS}" \
-		--prefix=${PREFIX} --disable-shared --with-ensurepip=no > /dev/null
-fi
+./configure \
+	CFLAGS_NODIST="${MANYLINUX_CFLAGS} ${MANYLINUX_CPPFLAGS}" \
+	LDFLAGS_NODIST="${MANYLINUX_LDFLAGS}" \
+	--prefix=${PREFIX} --disable-shared --with-ensurepip=no > /dev/null
 make -j$(nproc) > /dev/null
 make -j$(nproc) install > /dev/null
 popd

docker/build_scripts/build-openssl.sh

@@ -16,7 +16,7 @@ check_var ${OPENSSL_HASH}
 check_var ${OPENSSL_DOWNLOAD_URL}
 
 OPENSSL_VERSION=${OPENSSL_ROOT#*-}
-OPENSSL_MIN_VERSION=1.0.2
+OPENSSL_MIN_VERSION=1.1.1
 
 INSTALLED=$(openssl version | head -1 | awk '{ print $2 }')
 SMALLEST=$(echo -e "${INSTALLED}\n${OPENSSL_MIN_VERSION}" | sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n | head -1)

docker/build_scripts/cpython-pubkey-310-311.txt

@@ -0,0 +1,149 @@
+gpg --keyserver ha.pool.sks-keyservers.net --recv-keys A035C8C19219BA821ECEA86B64E628F8D684696D
+
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
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+M4anmXD3Gp3kl35AypXb4KyASF19+11RUziD4Z7qwQEWfbwOltNyZv2lD8s2jPr7
+P02axWRQUbZAEhxRmvOQev/FZPyCF6gqUo/HxRbQy3bzmnipyHSv1DlXNfCFCHvN
+8kGyZnRWARqIKRg+j9ediJgOUqlLhg6KmrTVxd5v3Dfv52PW2UODDTM20s3cQGuX
+/UswzMRwPI/+P44iCMwEKdm7duM/5oisZT9Vhy7gP15MreFZLcZvUVgjqgy0u57c
+styGK1Bo9e2sFcK2fA==
+=hypb
+-----END PGP PUBLIC KEY BLOCK-----

docker/build_scripts/finalize.sh

@@ -30,7 +30,7 @@ done
 
 # Create venv for auditwheel & certifi
 TOOLS_PATH=/opt/_internal/tools
-/opt/python/cp37-cp37m/bin/python -m venv $TOOLS_PATH
+/opt/python/cp39-cp39/bin/python -m venv $TOOLS_PATH
 source $TOOLS_PATH/bin/activate
 
 # Install default packages

docker/build_scripts/requirements.txt

@@ -1,18 +1,12 @@
 # pip requirements for all cpythons
 # NOTE: pip has GPG signatures; could download and verify independently.
-pip==20.3.4; python_version<'3.6' \
-    --hash=sha256:217ae5161a0e08c0fb873858806e3478c9775caffce5168b50ec885e358c199d \
-    --hash=sha256:6773934e5f5fc3eaa8c5a44949b5b924fc122daa0a8aa9f80c835b4ca2a543fc
-pip==21.1.1; python_version>='3.6' \
+pip==21.1.1 \
     --hash=sha256:11d095ed5c15265fc5c15cc40a45188675c239fb0f9913b673a33e54ff7d45f0 \
     --hash=sha256:51ad01ddcd8de923533b01a870e7b987c2eb4d83b50b89e1bf102723ff9fed8b
 wheel==0.36.2 \
     --hash=sha256:78b5b185f0e5763c26ca1e324373aadd49182ca90e825f7853f4b2509215dc0e \
     --hash=sha256:e11eefd162658ea59a60a0f6c7d493a7190ea4b9a85e335b33489d9f17e0245e
-setuptools==50.3.2 ; python_version=='3.5' \
-    --hash=sha256:2c242a0856fbad7efbe560df4a7add9324f340cf48df43651e9604924466794a \
-    --hash=sha256:ed0519d27a243843b05d82a5e9d01b0b083d9934eaa3d02779a23da18077bd3c
-setuptools==56.0.0 ; python_version>='3.6' \
+setuptools==56.0.0 \
      --hash=sha256:7430499900e443375ba9449a9cc5d78506b801e929fef4a186496012f93683b5 \
      --hash=sha256:08a1c0f99455307c48690f00d5c2ac2c1ccfab04df00454fef854ec145b81302
 build==0.3.1.post1 \
@@ -30,19 +24,13 @@ pyparsing==2.4.7 \
 toml==0.10.2 \
     --hash=sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b \
     --hash=sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f
-importlib-metadata==3.7.0 ; python_version>='3.6' and python_version<'3.8' \
+importlib-metadata==3.7.0 ; python_version<'3.8' \
     --hash=sha256:24499ffde1b80be08284100393955842be4a59c7c16bbf2738aad0e464a8e0aa \
     --hash=sha256:c6af5dbf1126cd959c4a8d8efd61d4d3c83bddb0459a17e554284a077574b614
-importlib-metadata==2.1.1 ; python_version<'3.6' \
-    --hash=sha256:b8de9eff2b35fb037368f28a7df1df4e6436f578fa74423505b6c6a778d5b5dd \
-    --hash=sha256:c2d6341ff566f609e89a2acb2db190e5e1d23d5409d6cc8d2fe34d72443876d4
-zipp==3.4.0 ; python_version>='3.6' and python_version<'3.8' \
+zipp==3.4.0 ; python_version<'3.8' \
     --hash=sha256:102c24ef8f171fd729d46599845e95c7ab894a4cf45f5de11a44cc7444fb1108 \
     --hash=sha256:ed5eee1974372595f9e416cc7bbeeb12335201d8081ca8a0743c954d4446e5cb
-zipp==1.2.0 ; python_version<'3.6' \
-    --hash=sha256:c70410551488251b0fee67b460fb9a536af8d6f9f008ad10ac51f615b6a521b1 \
-    --hash=sha256:e0d9e63797e483a30d27e09fffd308c59a700d365ec34e93cc100844168bf921
-typing-extensions==3.7.4.3 ; python_version>='3.6' and python_version<'3.8' \
+typing-extensions==3.7.4.3 ; python_version<'3.8' \
     --hash=sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918 \
     --hash=sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c \
     --hash=sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f