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@benjarobin Would you mind sharing how you encountered the error message you posted? ocaml-csexp is not a direct dependency of lwt (I checked the source). I just tested in a clean chroot and ocaml-csexp got installed as dependency of dune.

Thanks :)

The dependency to ocaml-csexp is missing

File "/usr/lib/ocaml/dune-configurator/dune-package", line 60, characters 16-21:
60 |  (requires unix csexp)
                     ^^^^^
Error: Library "csexp" not found.

EDIT: My pacman helper chached the build of Ocaml 5.4. My bad.

Doesn't build with OCaml 5.4. I'm not sure if the cause of this issue is in ocaml-ocplib-endian. I rebuilt all ocaml-* packages, including ocaml-ocplib-endian, with 5.4

File "src/unix/lwt_io.ml", line 1:
Error: /usr/lib/ocaml/ocplib-endian/bigstring/endianBigstring.cmi
       is not a compiled interface for this version of OCaml.
It seems to be for an older version of OCaml.

@yatsuekku, @meadow: Sorry about the delay on this, I wasn't able to reproduce this, but from looking at the output, it looks like it could be caused by ocaml-ppxlib and/or ocaml-ppx_here being build with an older version of ocaml, causing the interfaces to not match with the newly build ocaml-lwt package. Try if rebuilding these helps (there might also other packages affected by this up the dependency tree, it might be easier to just uninstall all ocaml packages and start from a clean slate in that case).

@dpeukert, @yatsuekku I'm experiencing exactly the same issue.

@dpeukert For me the output of dune test command is

File "_none_", line 1:                  
Error: Files /usr/lib/ocaml/ppx_here/expander/ppx_here_expander.cmxa
       and /usr/lib/ocaml/ppxlib/stdppx/stdppx.cmxa
       make inconsistent assumptions over interface Stdppx
File "test/core/test_lwt_mvar.ml", line 1:        
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_condition.ml", line 1:  
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_mutex.ml", line 1:      
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_switch.ml", line 1:     
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_pool.ml", line 1:       
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_result.ml", line 1:     
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_sequence.ml", line 1:   
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_seq.ml", line 1:        
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_stream.ml", line 1:     
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt_list.ml", line 1:       
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/test_lwt.ml", line 1:            
Warning 70 [missing-mli]: Cannot find interface file.
File "test/core/main.ml", line 1:                
Warning 70 [missing-mli]: Cannot find interface file.
Testing library 'retry'...                       
..............
Ok. 14 tests ran, 0 tests skipped in 0.01 seconds
File "test/ppx/main.ml", line 9, characters 0-46:
9 | let%lwt structure_let_result = Lwt.return_true
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 22 [preprocessor]: let%lwt should not be used at the module item level.
Replace let%lwt x = e by let x = Lwt_main.run (e)
File "test/ppx/main.ml", line 9, characters 0-46:
9 | let%lwt structure_let_result = Lwt.return_true
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning 22 [preprocessor]: let%lwt should not be used at the module item level.
Replace let%lwt x = e by let x = Lwt_main.run (e)
Testing library 'core'...                       
...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................SSSSSSSSSSSSSSSSSSSSSSS..................................................................................................................................................
Ok. 705 tests ran, 23 tests skipped in 0.09 seconds
Testing library 'ppx'...                       
................
Ok. 16 tests ran, 0 tests skipped in 1.20 seconds
Testing library 'react'...                     
...........
Ok. 11 tests ran, 0 tests skipped in 4.50 seconds
Testing library 'unix'...                      
.....................................SSS......................................................................................................................................................................................................
Ok. 235 tests ran, 3 tests skipped in 6.27 seconds

it gives status 1 and check() fails. These files mentioned in error does not belong to any package therefore I'm not sure why they are here. This happens on update though, I managed to install this package before.

@meadow: Hi, I wasn't able to reproduce this this, can you post the entire build log?

Hello, check() is failing on a (reasonably) clean system :)

@dpeukert Confirmed, everything is Ok. Thanks a lot.

@hurufu: Everything should be working now.