(for PR #29110)

2026-01-31 15:31.25: New job: build conf-llvm-shared.20, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29110/head (e3b282a9c0eb1ef824245e3ffb935dc8fcc9b1ea)
                              on debian-13-ocaml-4.12/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29110/head" && git reset --hard e3b282a9
git fetch origin master
git merge --no-edit 277244107784e7f5e6b57eaae2e769caae2a4906
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.12@sha256:706dc61d0174409402fcd2faae23602b9ff82740bbf62e63d39a1bed70f36645
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn conf-llvm-shared.20 20
RUN opam reinstall conf-llvm-shared.20; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'conf-llvm-shared.20' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1

END-OF-DOCKERFILE
docker build -f ../Dockerfile .

2026-01-31 15:31.25: Using cache hint "ocaml/opam:debian-13-ocaml-4.12@sha256:706dc61d0174409402fcd2faae23602b9ff82740bbf62e63d39a1bed70f36645-conf-llvm-shared.20-e3b282a9c0eb1ef824245e3ffb935dc8fcc9b1ea"
2026-01-31 15:31.25: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.12@sha256:706dc61d0174409402fcd2faae23602b9ff82740bbf62e63d39a1bed70f36645)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
 (run (network host)
      (shell "opam init --reinit --config .opamrc-sandbox -ni"))
 (run (shell "opam option solver=builtin-0install && opam config report"))
 (env OPAMDOWNLOADJOBS 1)
 (env OPAMERRLOGLEN 0)
 (env OPAMPRECISETRACKING 1)
 (env CI true)
 (env OPAM_REPO_CI true)
 (run (shell "rm -rf opam-repository/"))
 (copy (src .) (dst opam-repository/))
 (run (shell "opam repository set-url --strict default opam-repository/"))
 (run (network host)
      (shell "opam update --depexts || true"))
 (run (shell "opam pin add -k version -yn conf-llvm-shared.20 20"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall conf-llvm-shared.20;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'conf-llvm-shared.20' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-31 15:31.25: Waiting for resource in pool OCluster
2026-01-31 15:31.29: Waiting for worker…
2026-01-31 15:31.29: Got resource from pool OCluster
Building on clete
All commits already cached
HEAD is now at 2772441077 Merge pull request #29314 from jmid/more-fstar-ocaml-upper-bounds
Merge made by the 'ort' strategy.
 packages/conf-llvm-shared/conf-llvm-shared.20/opam | 38 +++++++++++
 packages/conf-llvm-shared/conf-llvm-shared.21/opam | 38 +++++++++++
 packages/conf-llvm-static/conf-llvm-static.20/opam | 38 +++++++++++
 packages/conf-llvm-static/conf-llvm-static.21/opam | 38 +++++++++++
 packages/llvm/llvm.20-shared/opam                  | 77 ++++++++++++++++++++++
 packages/llvm/llvm.20-static/opam                  | 76 +++++++++++++++++++++
 packages/llvm/llvm.21-shared/opam                  | 77 ++++++++++++++++++++++
 packages/llvm/llvm.21-static/opam                  | 76 +++++++++++++++++++++
 8 files changed, 458 insertions(+)
 create mode 100644 packages/conf-llvm-shared/conf-llvm-shared.20/opam
 create mode 100644 packages/conf-llvm-shared/conf-llvm-shared.21/opam
 create mode 100644 packages/conf-llvm-static/conf-llvm-static.20/opam
 create mode 100644 packages/conf-llvm-static/conf-llvm-static.21/opam
 create mode 100644 packages/llvm/llvm.20-shared/opam
 create mode 100644 packages/llvm/llvm.20-static/opam
 create mode 100644 packages/llvm/llvm.21-shared/opam
 create mode 100644 packages/llvm/llvm.21-static/opam

(from ocaml/opam:debian-13-ocaml-4.12@sha256:706dc61d0174409402fcd2faae23602b9ff82740bbf62e63d39a1bed70f36645)
2026-01-31 15:32.45 ---> using "37a96c9104701acb0fa54af4969be877dbd31b9d7bd863e099456413c15a33ad" from cache

/: (user (uid 1000) (gid 1000))

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-31 15:32.45 ---> using "bb345b501785366144b009d7cfae1eea34990fb96eeffa0c0d8be1da986427a5" from cache

/home/opam: (run (network host)
                 (shell "opam init --reinit --config .opamrc-sandbox -ni"))
Configuring from /home/opam/.opamrc-sandbox, then /home/opam/.opamrc, and finally from built-in defaults.
Checking for available remotes: rsync and local, git.
  - you won't be able to use mercurial repositories unless you install the hg command on your system.
  - you won't be able to use darcs repositories unless you install the darcs command on your system.

Continue? [Y/n] y
This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.

Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-01-31 15:32.45 ---> using "7c47547557493ff8ad774aec834946dbef389292d92d6f65e4ac0e41a3d71aff" from cache

/home/opam: (run (shell "opam option solver=builtin-0install && opam config report"))
Set to 'builtin-0install' the field solver in global configuration
# opam config report
# opam-version         2.5.0
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=13
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 71
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.12
# invariant            ["ocaml-base-compiler" {= "4.12.1"}]
# compiler-packages    ocaml-base-compiler.4.12.1, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.12/lib/ocaml/stublibs:/home/opam/.opam/4.12/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.12.1
2026-01-31 15:32.45 ---> using "94777ea99be2d1ba4ec4fab38523d3bf4a085eeb4f7f2c24546de6d7142d6520" from cache

/home/opam: (env OPAMDOWNLOADJOBS 1)

/home/opam: (env OPAMERRLOGLEN 0)

/home/opam: (env OPAMPRECISETRACKING 1)

/home/opam: (env CI true)

/home/opam: (env OPAM_REPO_CI true)

/home/opam: (run (shell "rm -rf opam-repository/"))
2026-01-31 15:32.45 ---> using "14d67cde638858dbff71489690c707d1947a0c106aafde5b7c5f6e9bb7d656a8" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-31 15:32.46 ---> using "dc4019d8a1f3de4dbd15d0ae56eadd2e6fdebdcdd2c853c52338637efbdd13fe" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-31 15:33.02 ---> saved as "7c360ddf9f0a6e7026fee38ef02a0f010b7ac3e905a0e7cd33e155e78a85011b"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [98.5 kB]
- Fetched 189 kB in 0s (1735 kB/s)
- Reading package lists...
2026-01-31 15:33.03 ---> saved as "92a313986bf7ba595e830373b30c4915e3109d1022a91d4f2c6af39b23554228"

/home/opam: (run (shell "opam pin add -k version -yn conf-llvm-shared.20 20"))
conf-llvm-shared is now pinned to version 20
2026-01-31 15:33.05 ---> saved as "ca758d7c42dc96beff7bf22f66b316b44251d98fd8dce72dd06ffee35b6e52b7"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall conf-llvm-shared.20;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'conf-llvm-shared.20' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
[ERROR] Package conf-llvm-shared.20 depends on the unavailable system package 'llvm-20-dev'. You can use `--no-depexts' to attempt installation anyway.
"/usr/bin/env" "bash" "-c" "opam reinstall conf-llvm-shared.20;
        res=$?;
        test "$res" != 31 && exit "$res";
        export OPAMCLI=2.0;
        build_dir=$(opam var prefix)/.opam-switch/build;
        failed=$(ls "$build_dir");
        partial_fails="";
        for pkg in $failed; do
          if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'conf-llvm-shared.20' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 5
2026-01-31 15:33.16: Job failed: Failed: Build failed
2026-01-31 15:33.16: Log analysis:
2026-01-31 15:33.16: >>> 
[ERROR] Package conf-llvm-shared.20 depends on the unavailable system package 'llvm-20-dev'. You can use `--no-depexts' to attempt installation anyway.
 (score = 100)
2026-01-31 15:33.16: [SKIP] Package not available