=== DEPENDENCIES (14 transitive) ===
  base-threads.base                                  922226874b26
  base-unix.base                                     af6d03bc3069
  conf-libffi.2.0.0                                  b0c43883d96c
  conf-pkg-config.4                                  f5167d99d01a
  csexp.1.5.2                                        9c05ef873229
  ctypes.0.24.0                                      ba3be1a92861
  dune.3.23.1                                        2678e6bab382
  dune-configurator.3.23.1                           3a9bd10ebf8e
  integers.0.8.0                                     6e549966cbe6
  ocaml.5.4.1                                        1519d574d288
  ocaml-base-compiler.5.4.1                          d4d53a990b78
  ocaml-compiler.5.4.1                               5b479d47bb2f
  ocaml-config.3                                     9a392e9ab1ee
  stdlib-shims.0.3.0                                 6052f809c9f5
=== STDOUT ===
Processing: [default: loading data]
[ctypes-foreign.0.24.0: extract]
-> retrieved ctypes-foreign.0.24.0  (cached)
[ctypes-foreign: dune build]
+ /home/opam/.opam/default/bin/dune "build" "-p" "ctypes-foreign" "-j" "39" "@install" (CWD=/home/opam/.opam/default/.opam-switch/build/ctypes-foreign.0.24.0)
-> compiled  ctypes-foreign.0.24.0
[WARNING] Opam package conf-libffi.2.0.0 depends on the following system package that can no longer be found: libffi-dev
-> installed ctypes-foreign.0.24.0

=== STDERR ===