Bug 1843209 - Bump Mach's minimum Python version to `3.8` r=firefox-build-system-reviewers,glandium

Differential Revision: https://phabricator.services.mozilla.com/D183449

build/docs/python.rst

@@ -11,7 +11,7 @@ related to the build system, Python is typically the first choice.
 Python Requirements
 ===================
 
-The tree requires Python 3.7 or greater to build.
+The tree requires Python 3.8 or greater to build.
 All Python packages not in the Python distribution are included in the
 source tree. So all you should need is a vanilla Python install and you
 should be good to go.

js/src/jit-test/README

@@ -20,7 +20,7 @@ they are running in the JS shell environment.
 
 * REQUIREMENTS
 
-Python 3.7. This is already a standard requirement for building our tree.
+Python 3.8. This is already a standard requirement for building our tree.
 
 * RUNNING THE TESTS
 

mach

@@ -10,7 +10,7 @@ import subprocess
 import traceback
 from textwrap import dedent, fill
 
-MIN_PYTHON_VERSION = (3, 7)
+MIN_PYTHON_VERSION = (3, 8)
 MAX_PYTHON_VERSION_TO_CONSIDER = (3, 11)
 
 
@@ -80,7 +80,7 @@ def try_alternate_python3_executables(args):
 
 
 def main(args):
-    # Ensure we are running Python 3.7+. We run this check as soon as
+    # Ensure we are running Python 3.8+. We run this check as soon as
     # possible to avoid a cryptic import/usage error.
     if sys.version_info < MIN_PYTHON_VERSION:
         print(

python/mozboot/bin/bootstrap.py

@@ -14,10 +14,10 @@
 import sys
 
 major, minor = sys.version_info[:2]
-if (major < 3) or (major == 3 and minor < 7):
+if (major < 3) or (major == 3 and minor < 8):
     print(
-        "Bootstrap currently only runs on Python 3.7+."
-        "Please try re-running with python3.7+."
+        "Bootstrap currently only runs on Python 3.8+."
+        "Please try re-running with python3.8+."
     )
     sys.exit(1)
 

taskcluster/ci/bootstrap/kind.yml

@@ -12,11 +12,6 @@ transforms:
     - gecko_taskgraph.transforms.task:transforms
 
 jobs:
-    debian10:
-        image: debian:buster
-        pre-commands:
-            - apt-get update
-            - apt-get install -y --no-install-recommends curl mercurial python3-pip
     debian11:
         image: debian:bullseye
         pre-commands:

taskcluster/ci/packages/ubuntu.yml

@@ -38,8 +38,8 @@ ub18-python-psutil:
             sha256: a0ca4560d25fcfe5b7407d2cb21318f0635f2c3559898efce1679eef35b61f05
         name: python-psutil
         pre-build-command: >-
-            apt-get install python3.7-dev python3.7-dbg &&
-            export DEBPYTHON3_SUPPORTED="3.7"
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.8"
 
 ub18-pygobject:
     description: "pygobject for Ubuntu bionic"
@@ -51,8 +51,8 @@ ub18-pygobject:
             sha256: b77f84885d9b6d2c03422ecb3bf69d50dd0607d3456154943671e5a1f87946aa
         name: pygobject
         pre-build-command: >-
-            apt-get install python3.7-dev python3.7-dbg &&
-            export DEBPYTHON3_SUPPORTED="3.6,3.7"
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.6,3.8"
 
 ub18-pyatspi:
     description: "pyatspi for Ubuntu bionic"
@@ -66,8 +66,8 @@ ub18-pyatspi:
         pre-build-command: >-
             sed -i s/\\basync\\b/asynchronous/ pyatspi/registry.py &&
             EDITOR=cat dpkg-source --commit . sync &&
-            apt-get install python3.7-dev python3.7-dbg &&
-            export DEBPYTHON3_SUPPORTED="3.6,3.7"
+            apt-get install python3.8-dev python3.8-dbg &&
+            export DEBPYTHON3_SUPPORTED="3.6,3.8"
 
 ub18-python-zstandard:
     description: "python-zstandard for Ubuntu bionic"
@@ -79,8 +79,8 @@ ub18-python-zstandard:
             sha256: 31d12fcd942dd8dbf52ca5f6b1bbe287f44e5d551a081a983ff3ea2082867863
         name: python-zstandard
         pre-build-command: >-
-            apt-get install python3.7-dev &&
-            export DEBPYTHON3_SUPPORTED="3.7" &&
+            apt-get install python3.8-dev &&
+            export DEBPYTHON3_SUPPORTED="3.8" &&
             debchange -v 0.19.0-1.ub18moz --distribution bionic "Mozilla backport for bionic"
 
 ub18-mercurial:
@@ -92,9 +92,9 @@ ub18-mercurial:
             url: https://www.mercurial-scm.org/release/mercurial-6.4.3.tar.gz
             sha256: a77fb62d325934a83a00b2fc6db109f44c67b86768fc40490366f513640c7f64
         pre-build-command: >-
-            apt-get install python3.7-dev &&
-            export DEB_HG_PYTHON_VERSIONS="3.7" &&
-            export DEBPYTHON3_SUPPORTED="3.7" &&
+            apt-get install python3.8-dev &&
+            export DEB_HG_PYTHON_VERSIONS="3.8" &&
+            export DEBPYTHON3_SUPPORTED="3.8" &&
             cp -r contrib/packaging/debian debian &&
             sed -i -e "s/__VERSION__/$(awk -F\" '$2 {print $2}' mercurial/__version__.py)-1.ub18moz1/" \
                          -e "s/__DATE__/$(date --rfc-2822)/" \

taskcluster/ci/toolchain/python.yml

@@ -12,17 +12,6 @@ job-defaults:
     run:
         script: build-cpython.sh
 
-linux64-python-3.7:
-    treeherder:
-        symbol: TL(python3.7)
-    run:
-        toolchain-artifact: public/build/python.tar.zst
-    fetches:
-        fetch:
-            - cpython-3.7.15
-    worker:
-        docker-image: {in-tree: ubuntu1804-build-python}
-
 linux64-python-3.8:
     treeherder:
         symbol: TL(python)

taskcluster/docker/ubuntu1804-base/Dockerfile

@@ -37,9 +37,9 @@ RUN /usr/local/sbin/setup_packages.sh $TASKCLUSTER_ROOT_URL $DOCKER_IMAGE_PACKAG
       make \
       mercurial \
       patch \
-      python3.7 \
-      python3.7-dev \
-      python3.7-venv \
+      python3.8 \
+      python3.8-dev \
+      python3.8-venv \
       python3-distutils-extra \
       python3-minimal \
       python3-zstandard \
@@ -50,7 +50,7 @@ RUN /usr/local/sbin/setup_packages.sh $TASKCLUSTER_ROOT_URL $DOCKER_IMAGE_PACKAG
       zstd \
     && /usr/local/sbin/clean_packages.sh $DOCKER_IMAGE_PACKAGES
 
-RUN test $(readlink /usr/bin/python3) = python3.6 && ln -sf python3.7 /usr/bin/python3
+RUN test $(readlink /usr/bin/python3) = python3.6 && ln -sf python3.8 /usr/bin/python3
 
 # %include testing/mozharness/external_tools/robustcheckout.py
 COPY topsrcdir/testing/mozharness/external_tools/robustcheckout.py /usr/local/mercurial/robustcheckout.py