Merge #494: Bump Pyenv's Python to 3.9

d1055df Bump PyEnv version to 3.9.7 (Sjors Provoost)

Pull request description:

  Since the release notes mention support for Python 3.9. Or do we also want to guarantee backwards compatibility?

  Using 3.9.1 for PyEnv (latest available on macOS) and 3.9.2 for the Windows installer.

ACKs for top commit:
  achow101:
    ACK d1055df

Tree-SHA512: 8913672fe2c5aefcd76558c5d574984612606f94c883078c0f19df4d952fd55f42d79ac6d4dbc6738d441fd9c2f93105ebbe89e76b079255eb99b9cee7c7946c

.python-version

@@ -1 +1 @@
-3.6.12
+3.9.7

contrib/build.Dockerfile

@@ -39,7 +39,7 @@ COPY contrib/reproducible-python.diff /opt/reproducible-python.diff
 ENV PYTHON_CONFIGURE_OPTS="--enable-shared"
 ENV BUILD_DATE="Jan  1 2019"
 ENV BUILD_TIME="00:00:00"
-RUN eval "$(pyenv init --path)" && eval "$(pyenv virtualenv-init -)" && cat /opt/reproducible-python.diff | pyenv install -kp 3.6.12
+RUN eval "$(pyenv init --path)" && eval "$(pyenv virtualenv-init -)" && cat /opt/reproducible-python.diff | pyenv install -kp 3.9.7
 
 RUN dpkg --add-architecture i386
 RUN wget -nc https://dl.winehq.org/wine-builds/winehq.key

contrib/build_bin.sh

@@ -12,7 +12,7 @@ pip install poetry
 poetry install -E qt
 
 # We also need to change the timestamps of all of the base library files
-lib_dir=`pyenv root`/versions/3.6.12/lib/python3.6
+lib_dir=`pyenv root`/versions/3.9.7/lib/python3.9
 TZ=UTC find ${lib_dir} -name '*.py' -type f -execdir touch -t "201901010000.00" '{}' \;
 
 # Make the standalone binary

contrib/build_wine.sh

@@ -3,8 +3,7 @@
 
 set -ex
 
-# No Windows installer for 3.6.12
-PYTHON_VERSION=3.6.8
+PYTHON_VERSION=3.9.7
 
 PYTHON_FOLDER="python3"
 PYHOME="c:/$PYTHON_FOLDER"