ci: pin python dependencies and let Dependabot keep track of them

.github/dependabot.yml

@@ -7,3 +7,8 @@ updates:
     schedule:
       interval: "weekly"
     open-pull-requests-limit: 2
+  - package-ecosystem: "pip"
+    directory: "/.github/workflows"
+    schedule:
+      interval: "monthly"
+    open-pull-requests-limit: 2

.github/workflows/build_test.sh

@@ -101,11 +101,11 @@ add-apt-repository -y ppa:upstream-systemd-ci/systemd-ci
 apt-get -y update
 apt-get -y build-dep systemd
 apt-get -y install "${PACKAGES[@]}"
-# Install the latest meson and ninja form pip, since the distro versions don't
-# support all the features we need (like --optimization=). Since the build-dep
+# Install more or less recent meson and ninja with pip, since the distro versions don't
+# always support all the features we need (like --optimization=). Since the build-dep
 # command above installs the distro versions, let's install the pip ones just
 # locally and add the local bin directory to the $PATH.
-pip3 install --user -U meson ninja
+pip3 install --user -r .github/workflows/requirements.txt --require-hashes
 export PATH="$HOME/.local/bin:$PATH"
 
 $CC --version

.github/workflows/requirements.txt

@@ -0,0 +1,18 @@
+meson==0.60.2 \
+    --hash=sha256:64e6968565bf1b8152f4f9d6ca8154efb9e14caa9aabf7b22e71e6c5d053e921 \
+    --hash=sha256:f486659a8c723ec8d54dbe00a9a8b4696fc75f499a60a566a9b0d02952ac0be9
+ninja==1.10.2.3 \
+    --hash=sha256:0560eea57199e41e86ac2c1af0108b63ae77c3ca4d05a9425a750e908135935a \
+    --hash=sha256:21a1d84d4c7df5881bfd86c25cce4cf7af44ba2b8b255c57bc1c434ec30a2dfc \
+    --hash=sha256:279836285975e3519392c93c26e75755e8a8a7fafec9f4ecbb0293119ee0f9c6 \
+    --hash=sha256:29570a18d697fc84d361e7e6330f0021f34603ae0fcb0ef67ae781e9814aae8d \
+    --hash=sha256:5ea785bf6a15727040835256577239fa3cf5da0d60e618c307aa5efc31a1f0ce \
+    --hash=sha256:688167841b088b6802e006f911d911ffa925e078c73e8ef2f88286107d3204f8 \
+    --hash=sha256:6bd76a025f26b9ae507cf8b2b01bb25bb0031df54ed685d85fc559c411c86cf4 \
+    --hash=sha256:740d61fefb4ca13573704ee8fe89b973d40b8dc2a51aaa4e9e68367233743bb6 \
+    --hash=sha256:840a0b042d43a8552c4004966e18271ec726e5996578f28345d9ce78e225b67e \
+    --hash=sha256:84be6f9ec49f635dc40d4b871319a49fa49b8d55f1d9eae7cd50d8e57ddf7a85 \
+    --hash=sha256:9ca8dbece144366d5f575ffc657af03eb11c58251268405bc8519d11cf42f113 \
+    --hash=sha256:cc8b31b5509a2129e4d12a35fc21238c157038022560aaf22e49ef0a77039086 \
+    --hash=sha256:d5e0275d28997a750a4f445c00bdd357b35cc334c13cdff13edf30e544704fbd \
+    --hash=sha256:e1b86ad50d4e681a7dbdff05fc23bb52cb773edb90bc428efba33fa027738408

.lgtm.yml

@@ -32,7 +32,7 @@ extraction:
         - libssl-dev
         - python3-jinja2
     after_prepare:
-      - pip3 install meson==0.53.2
+      - pip3 install -r .github/workflows/requirements.txt --require-hashes
       - export PATH="/opt/work/.local/bin:$PATH"
   python:
     python_setup:

tools/oss-fuzz.sh

@@ -35,8 +35,12 @@ else
     apt-get update
     apt-get install -y gperf m4 gettext python3-pip \
         libcap-dev libmount-dev libkmod-dev \
-        pkg-config wget
-    pip3 install meson ninja jinja2
+        pkg-config wget python3-jinja2
+    pip3 install -r .github/workflows/requirements.txt --require-hashes
+
+    # https://github.com/google/oss-fuzz/issues/6868
+    ORIG_PYTHONPATH=$(python3 -c 'import sys;print(":".join(sys.path[1:]))')
+    export PYTHONPATH="$ORIG_PYTHONPATH:/usr/lib/python3/dist-packages/"
 
     if [[ "$SANITIZER" == undefined ]]; then
         UBSAN_FLAGS="-fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow"