Building on ltsc2025-1
(from ocaml/opam:windows-server-mingw-ltsc2025-opam)
2026-03-09 18:35.55 ---> using "63e5ddb9687855d0a0c4c5e0088f813758807605401f3a88b07751088826ddff" from cache
C:/: (user (uid 1000) (gid 1000))
C:/: (env OPAMPRECISETRACKING 1)
C:/: (env OPAMUTF8 never)
C:/: (env OPAMEXTERNALSOLVER builtin-0install)
C:/: (env OPAMCRITERIA +removed)
C:/: (env CI true)
C:/: (env OPAM_HEALTH_CHECK_CI true)
C:/: (run (shell "ln -f /usr/local/bin/opam-dev.exe /usr/local/bin/opam.exe"))
2026-03-09 18:35.55 ---> using "eb751f1617949fccf400da87a349c508e73323f3f0e3482f2cce8c46fbcb6c21" from cache
C:/: (run (network host)
(shell "rm -rf ~/opam-repository && git clone -q 'https://github.com/ocaml/opam-repository' ~/opam-repository && git -C ~/opam-repository checkout -q 31db989bcaf14647d9889b8903120d6202ac37a8"))
2026-03-09 18:35.55 ---> using "ef58fca6f6db70f2bdfd85579892df7c50e047d2e179a3be59dcaa5c5a2d773c" from cache
C:/: (run (shell "rm -rf ~/.opam && opam init -ya --bare ~/opam-repository"))
User configuration:
Updating ~\.bashrc.
[NOTE] Make sure that ~/.bashrc is well sourced in your ~\.bash_profile.
Added 9 lines after line 1 in ~\.bashrc.
2026-03-09 18:35.55 ---> using "c700dfaf6f2da6800841bb961abfee8cd8858dee38ab51c0793b149f1795270d" from cache
C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "opam switch create --repositories=default 'mingw-5.4' '5.4.0'"))
<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.4.0"}]
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed arch-x86_64.1
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> installed host-arch-x86_64.1
-> installed host-system-mingw.1
-> retrieved mingw-w64-shims.0.2.0 (cached)
-> retrieved flexdll.0.44 (https://github.com/ocaml/flexdll/archive/refs/tags/0.44.tar.gz)
-> installed flexdll.0.44
-> installed ocaml-options-vanilla.1
-> installed conf-mingw-w64-gcc-x86_64.1
-> installed ocaml-env-mingw64.1
-> installed system-mingw.1
-> retrieved ocaml-config.3 (2 extra sources)
-> retrieved ocaml-config.3 (2 extra sources)
-> installed mingw-w64-shims.0.2.0
-> retrieved ocaml-compiler.5.4.0 (https://github.com/ocaml/ocaml/releases/download/5.4.0/ocaml-5.4.0.tar.gz)
-> installed ocaml-compiler.5.4.0
-> installed ocaml-base-compiler.5.4.0
-> installed ocaml-config.3
-> installed ocaml.5.4.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.
# To update the current shell environment, run: eval $(opam env --switch=mingw-5.4)
2026-03-09 18:35.55 ---> using "bde3e22405d3d4b8eb936b6a5924016abe757c72ef4284f806d0ffa633cf6608" from cache
C:/: (run (network host)
(shell "opam update --depexts"))
2026-03-09 18:35.55 ---> using "52107e23401ba5a409505a63e9d96ae2fb84390238c362f7049829fa18c5671f" from cache
C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "opam remove -y owl-jupyter.1.0\
\nopam install -vy owl-jupyter.1.0\
\nres=$?\
\nif [ $res = 31 ]; then\
\n if opam show -f x-ci-accept-failures: owl-jupyter.1.0 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then\
\n echo \"This package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\"\
\n exit 69\
\n fi\
\nfi \
\n\
\n\
\nexit $res"))
Nothing to do.
[NOTE] owl-jupyter.1.0 is not installed.
The following actions will be performed:
=== recompile 1 package
- recompile mingw-w64-shims 0.2.0 [uses conf-mingw-w64-gcc-i686]
=== install 55 packages
- install base v0.17.3 [required by ppx_yojson_conv, owl]
- install base-bytes base [required by ocplib-endian]
- install base64 3.5.2 [required by jupyter]
- install camlzip 1.14 [required by npy]
- install conf-gmp 5 [required by conf-gmp-powm-sec, zarith]
- install conf-gmp-powm-sec 4 [required by cryptokit]
- install conf-mingw-w64-gcc-i686 1 [required by conf-mingw-w64-zlib-i686]
- install conf-mingw-w64-gmp-i686 1 [required by conf-gmp]
- install conf-mingw-w64-gmp-x86_64 1 [required by conf-gmp]
- install conf-mingw-w64-zlib-i686 1 [required by conf-zlib]
- install conf-mingw-w64-zlib-x86_64 1 [required by conf-zlib]
- install conf-openblas 0.2.3 [required by owl]
- install conf-pkg-config 4 [required by conf-zmq, conf-zlib, zarith, conf-plplot]
- install conf-plplot 1 [required by plplot]
- install conf-zlib 1 [required by cryptokit]
- install conf-zmq 0.1 [required by zmq]
- install cppo 1.8.0 [required by ppx_deriving]
- install cryptokit 1.21.1 [required by jupyter]
- install csexp 1.5.2 [required by dune-configurator]
- install ctypes 0.24.0 [required by owl]
- install dune 3.21.1 [required by owl-jupyter]
- install dune-configurator 3.21.1 [required by owl, cryptokit, zmq, plplot]
- install integers 0.7.0 [required by ctypes]
- install jupyter 3.0.1 [required by owl-jupyter]
- install logs 0.10.0 [required by jupyter]
- install lwt 6.1.1 [required by jupyter]
- install lwt_ppx 6.1.0 [required by jupyter]
- install npy 0.0.9 [required by owl]
- install ocaml-compiler-libs v0.17.0 [required by owl-top]
- install ocaml_intrinsics_kernel v0.17.1 [required by base]
- install ocamlbuild 0.16.1 [required by logs, uuidm]
- install ocamlfind 1.9.8 [required by ppx_deriving, logs, uuidm]
- install ocplib-endian 1.2 [required by lwt]
- install octavius 1.2.2 [required by ppx_js_style]
- install owl 1.2 [required by owl-plplot, owl-top]
- install owl-base 1.2 [required by owl]
- install owl-jupyter 1.0
- install owl-plplot 1.1 [required by owl-jupyter]
- install owl-top 1.2 [required by owl-jupyter]
- install plplot 5.12.1 [required by owl-plplot]
- install ppx_derivers 1.2.1 [required by ppx_deriving]
- install ppx_deriving 6.1.1 [required by jupyter]
- install ppx_js_style v0.17.1 [required by ppx_yojson_conv]
- install ppx_yojson_conv v0.17.1 [required by jupyter]
- install ppx_yojson_conv_lib v0.17.0 [required by ppx_yojson_conv]
- install ppxlib 0.37.0 [required by ppx_deriving, lwt_ppx, ppx_yojson_conv]
- install sexplib0 v0.17.0 [required by ppxlib, base]
- install stdint 0.7.2 [required by jupyter]
- install stdlib-shims 0.3.0 [required by ppxlib]
- install topkg 1.1.1 [required by logs, uuidm]
- install uuidm 0.9.10 [required by jupyter]
- install yojson 3.0.0 [required by jupyter]
- install zarith 1.14 [required by cryptokit]
- install zmq 5.3.0 [required by jupyter]
- install zmq-lwt 5.3.0 [required by jupyter]
The following system packages will first need to be installed:
[NOTE] You can retry with '--assume-depexts' to skip this check, or run 'opam option depext=false' to permanently disable handling of system packages.
Running the system package manager non-interactively requires '--confirm-level=unsafe-yes'.
mingw64-i686-gcc-core mingw64-i686-gmp mingw64-i686-zlib mingw64-x86_64-gmp mingw64-x86_64-zlib pkgconf
<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>
opam believes some required external dependencies are missing. opam can:
> 1. Run C:\opam\.opam\.cygwin\setup-x86_64.exe to install them (may need root/sudo access)
2. Display the recommended C:\opam\.opam\.cygwin\setup-x86_64.exe command and wait while you run it manually (e.g. in another terminal)
3. Continue anyway, and, upon success, permanently register that this external dependency is present, but not detectable
4. Abort the installation
[1/2/3/4] 4
'C:\cygwin64\usr\local\bin\opam.exe install -vy owl-jupyter.1.0' failed.
"C:\cygwin64\bin\bash.exe" "-lc" "opam remove -y owl-jupyter.1.0
opam install -vy owl-jupyter.1.0
res=$?
if [ $res = 31 ]; then
if opam show -f x-ci-accept-failures: owl-jupyter.1.0 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then
echo "This package failed and has been disabled for CI using the 'x-ci-accept-failures' field."
exit 69
fi
fi
exit $res" failed with exit status 10
Failed: Build failed
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