(for PR #29568)

2026-03-23 09:19.17: New job: build ocamlformat-lib.0.26.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29568/head (353fd9234f0397ed1edb6d612e5b9da8472dea1c)
                              on debian-13-ocaml-5.4-no-flat-float-array/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29568/head" && git reset --hard 353fd923
git fetch origin master
git merge --no-edit 63b7ba71be83567e54bb667df0f2bb374d74fb61
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4-no-flat-float-array@sha256:3ada8cd86e83cec71a3cf57e754d6074776a8db5d2233b5b677dc13fd112224e
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocamlformat-lib.0.26.0 0.26.0
RUN opam reinstall ocamlformat-lib.0.26.0; \
    res=$?; \
    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 "$pkg" != 'ocamlformat-lib.0.26.0' && partial_fails="$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 .

2026-03-23 09:19.17: Using cache hint "ocaml/opam:debian-13-ocaml-5.4-no-flat-float-array@sha256:3ada8cd86e83cec71a3cf57e754d6074776a8db5d2233b5b677dc13fd112224e-ocamlformat-lib.0.26.0-353fd9234f0397ed1edb6d612e5b9da8472dea1c"
2026-03-23 09:19.17: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4-no-flat-float-array@sha256:3ada8cd86e83cec71a3cf57e754d6074776a8db5d2233b5b677dc13fd112224e)
 (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 ocamlformat-lib.0.26.0 0.26.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ocamlformat-lib.0.26.0;\
             \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 \"$pkg\" != 'ocamlformat-lib.0.26.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-03-23 09:19.17: Waiting for resource in pool OCluster
2026-03-23 09:34.46: Waiting for worker…
2026-03-23 09:38.53: Got resource from pool OCluster
Building on clete
All commits already cached
HEAD is now at 63b7ba71be Merge pull request #29573 from davesnx/release-parseff-0.2.0
Merge made by the 'ort' strategy.
 packages/ocamlformat-lib/ocamlformat-lib.0.25.1/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.26.0/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.26.1/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.26.2/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.27.0/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.28.1/opam | 1 +
 packages/ocamlformat-lib/ocamlformat-lib.0.29.0/opam | 1 +
 packages/ocamlformat/ocamlformat.0.24.1/opam         | 1 +
 8 files changed, 8 insertions(+)

(from ocaml/opam:debian-13-ocaml-5.4-no-flat-float-array@sha256:3ada8cd86e83cec71a3cf57e754d6074776a8db5d2233b5b677dc13fd112224e)
2026-03-23 09:41.17 ---> using "86fe993977cadad4b21cfa840e6dfb5b99f106e1130ecc565d5821717091059d" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-03-23 09:41.17 ---> using "33f176a665d1111b9c5f22d65a4918017999f59d91d0783646fe0aa5df139a47" 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.

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.

Continue? [Y/n] y
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-03-23 09:41.17 ---> using "c46234bdc09404d769dded661c794fb487f1203ddb6db05b7aca5b5afea98286" 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       5.4
# invariant            ["ocaml-variants" {= "5.4.0+options"}]
# compiler-packages    ocaml-compiler.5.4.0, ocaml-option-no-flat-float-array.1, ocaml-options-only-no-flat-float-array.1, ocaml-variants.5.4.0+options
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.4/lib/ocaml/stublibs:/home/opam/.opam/5.4/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.4.0+options+no-flat-float-array
2026-03-23 09:41.17 ---> using "1d96fac9dd1a52ed797e00992d5e4e65fd6a7e48c71e7ae1a289129acb60abf1" 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/"))
2026-03-23 09:41.17 ---> using "eae096a2140d7585f7f39bfac4e05bc630d4450467ed79811fb8c4fa8d58a9fe" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-23 09:41.18 ---> using "54c2ee8734dd70a15bb75b98f60bb93449e86e1f53be6f2bcc99c9bc4f826f6b" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-23 09:41.18 ---> using "1b34e834676a1314ba4319b55dcb1a55a67125eac4897a6d2e9188e7b47a292d" from cache

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]
- 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 trixie/main amd64 Packages [9671 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [114 kB]
- Fetched 10.0 MB in 1s (7534 kB/s)
- Reading package lists...
- 
2026-03-23 09:41.18 ---> using "e4f001d25f7fde4325933a8e92d3a5f151afb87cca5394654d26050b200f4071" from cache

/home/opam: (run (shell "opam pin add -k version -yn ocamlformat-lib.0.26.0 0.26.0"))
ocamlformat-lib is now pinned to version 0.26.0
2026-03-23 09:41.20 ---> saved as "a85db1d487313d2514a4200c21d975dafd4536a55111c342a2c3441d34395484"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ocamlformat-lib.0.26.0;\
                        \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 \"$pkg\" != 'ocamlformat-lib.0.26.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ocamlformat-lib.0.26.0 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-variants = 5.4.0+options
    - ocamlformat-lib = 0.26.0 -> ocaml < 5.2 -> dkml-base-compiler
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-variants = 5.4.0+options
    - ocamlformat-lib = 0.26.0 -> ocaml < 5.2 -> ocaml-base-compiler < 5.1.2~
  * Missing dependency:
    - ocamlformat-lib = 0.26.0 -> ocaml < 5.2 -> ocaml-base-compiler (= 4.02.4 | = 4.03.1 | = 4.04.3 | = 4.05.1 | = 4.06.2 | = 4.07.2 | = 4.08.2 | = 4.09.2 | = 4.10.3 | = 4.11.3) | ocaml-system >= 4.02.4 | ocaml-variants < 4.11.4~
    no matching version
    unmet availability conditions, e.g. 'sys-ocaml-version = "5.4.1" & (os != "win32" | sys-ocaml-libc = "msvc")'
    not available because the package is pinned to version 5.4.0+options

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall ocamlformat-lib.0.26.0;
        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 "$pkg" != 'ocamlformat-lib.0.26.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-03-23 09:41.36: Job failed: Failed: Build failed
2026-03-23 09:41.36: Log analysis:
2026-03-23 09:41.36: >>> 
No solution found, exiting
 (score = 100)
2026-03-23 09:41.36: [SKIP] Package not available