PostHog master-20261022-b904ac8 build recipe

github.com/PostHog/posthog (b904ac8008e531c8aaeaf58e523cf97cff9fba41) at b904ac8008e531c8aaeaf58e523cf97cff9fba41

Fetched once, with the network on, by the vendor step (Dockerfile.vendor) when the kit was made; the offline build uses the kit's vendored copies:

• https://github.com/PostHog/posthog.git
• https://www.python.org/ftp/python/3.14.9/Python-3.14.9.tar.xz

• Base imageubuntu:24.04@sha256:68ee22004a9109b44973313b02ff7b1de250f1de0f5ecb628d73f579aaff33ac
• BuildKitmoby/buildkit:v0.31.2
  sha256:e0e67ea9c4bb07bdef683e29f70f3b623d1eb9c82274a9ec04e6bb0511449fb0
• Build methodsource-rebuild-python
• SOURCE_DATE_EPOCH1792630321 (2026-10-22T00:52:01Z)
• Target digest (linux/amd64)sha256:e5edff2d616054b702512e27673c159243f51576ab0275d8650d0ad1e37a3f58
• Target config digestsha256:6d378b5c136639f631e7337412e96df9bcf5bf4ecd4c648051bddef13d7ac63e
• Checksummed kit files60,081 (CHECKSUMS.sha256)

# =====================================================================
# PostHog (MIT; Enterprise ee/ removed) -- HERMETIC OFFLINE BUILD (docker build --network=none).
# Reassembles the filesystem Dockerfile.vendor built from upstream's source (vendored/posthog-src/*.tar.gz)
# onto the digest-pinned ubuntu:24.04, with CPython 3.14.9 compiled here, offline, from python.org's tarball
# (sha256 re-checked) and the vendored build debs -- the same command the vendor stage ran.
# =====================================================================
FROM ubuntu:24.04@sha256:68ee22004a9109b44973313b02ff7b1de250f1de0f5ecb628d73f579aaff33ac AS cpython
ARG SOURCE_DATE_EPOCH=1792630321
ENV SOURCE_DATE_EPOCH=${SOURCE_DATE_EPOCH}
COPY vendored/posthog-src/python/debs/ /tmp/cpython-debs/
COPY vendored/posthog-src/python/Python-3.14.9.tar.xz /tmp/Python-3.14.9.tar.xz
RUN set --; for f in /tmp/cpython-debs/*.deb; do [ -e "$f" ] && set -- "$@" "$f"; done; \
    for pass in 1 2 3 4 5; do [ $# -eq 0 ] || dpkg -i --skip-same-version "$@" >/dev/null 2>&1 && break; done; \
    dpkg --configure -a && bad= && for d in "$@"; do p=$(dpkg-deb -f "$d" Package) v=$(dpkg-deb -f "$d" Version); \
      case "$(dpkg-query -W -f='${Version} ${db:Status-Abbrev}' "$p" 2>/dev/null)" in "$v ii"*) ;; *) bad="$bad $p=$v" ;; esac; done && \
    { [ -z "$bad" ] || { echo "vendored debs not installed at their vendored version:$bad" >&2; false; }; } && \
    : "${SOURCE_DATE_EPOCH:?the CPython build needs SOURCE_DATE_EPOCH}" && \
    echo "e02d9ac21cebda6e46435369744a92c65cc7cd8669697694122cf97ffacd1e53  /tmp/Python-3.14.9.tar.xz" | sha256sum -c - && \
    mkdir -p /usr/src/python && tar -xJf /tmp/Python-3.14.9.tar.xz -C /usr/src/python --strip-components=1 --no-same-owner && \
    rm -rf /tmp/cpython-debs /tmp/Python-3.14.9.tar.xz && cd /usr/src/python && \
    export DEB_BUILD_MAINT_OPTIONS=optimize=-lto && \
    PYCF="$(dpkg-buildflags --get CFLAGS) $(dpkg-buildflags --get CPPFLAGS)" && PYLD="$(dpkg-buildflags --get LDFLAGS)" && \
    ./configure --build=x86_64-linux-gnu --prefix=/usr/local --enable-shared --enable-loadable-sqlite-extensions --enable-option-checking=fatal --disable-test-modules --without-static-libpython --with-ensurepip=install --with-system-expat --without-system-libmpdec --with-dbmliborder= py_cv_module__dbm=n/a py_cv_module__gdbm=n/a py_cv_module__tkinter=n/a && \
    make -j"$(nproc)" "EXTRA_CFLAGS=$PYCF" "LDFLAGS=$PYLD,--strip-all" && \

Continues: 41 more lines. Create a free account to read the rest, or sign in.

#!/usr/bin/env bash
# =============================================================================
# ReadyStack — offline reproducible rebuild.
#
# Rebuilds this product's image from THIS ARCHIVE ALONE, with no network access
# of any kind, and prints the resulting linux/amd64 image-manifest digest.
# Run ./VERIFY_OFFLINE.sh afterwards to assert it equals the published digest.
#
# Requirements: linux/amd64 Docker host, docker buildx >= 0.30, jq, tar.
# No git, no registry access, no additional tooling.
#
#   ./BUILD_OFFLINE.sh                the rebuild (OCI image + a docker-loadable copy)
#   ./BUILD_OFFLINE.sh --provenance   the same rebuild with SLSA v1 build provenance (mode=max) attached to the OCI
#                                     image, generated by BuildKit, not by any build step. Run on your own hardened,
#                                     isolated build platform and sign that provenance with a key the build cannot
#                                     reach, and the result meets SLSA Build Level 3 (see REBUILD.md). The image
#                                     digest is the same either way.
# =============================================================================
set -euo pipefail
PROVENANCE=0
for arg in "$@"; do
  case "$arg" in
    --provenance) PROVENANCE=1 ;;
    -h|--help) sed -n '2,20p' "$0"; exit 0 ;;

Continues: 101 more lines. Create a free account to read the rest, or sign in.