Library "decompress" not found with dune.2.5.1 and Multicore OCaml 4.10.0 about decompress

[dinosaure]

What am I missing?

The transition is a bit more complex than that, Zlib_deflate.error does not exists anymore and all the API was updated since 1.0.0 (I did not detailed how to update an decompress.0.8.0's code to decompress.1.0.0 but I notified a huge breaking change at the release).

I can take a look and propose a PR to help you about the migration 👍.

[dinosaure]

Hi, decompress.1.0.0 introduces a new package layout where the package decompress is a meta-empty package which have nothing. Then, 3 packages exists:

• decompress.de which implements RFC1951
• decompress.zl which implements Zlib
• decompress.gz which implements Gzip

So it depends on what you want. I can infer that you probably want Zlib and in this case, a dune file should be:

(executable
 (name my_exe)
 (libraries checkseum.ocaml decompress.zl))

Then, the layout of modules changes a bit too where the module Decompress does not exist anymore but Zl (if you link with decompress.zl) exists. I just discovered that the documentation was not updated properly but now you can get it now at this address: https://mirage.github.io/decompress/decompress/Zl/index.html

For a normal use (without a micro control of allocation), Higher is the most easy entry-point.

I should update the README.md about this new version. If you have any question, please don't hesitate - I will close this issue when I will update the README.md.

[shakthimaan]

I have made the following changes:

• Used decompress.zl in the dune file.
• Updated to use open De instead of open Decompress.
  Now I get this error:

File "benchmarks/decompress/test_decompress.ml", line 6, characters 27-45:
6 | exception Deflate_error of Zlib_deflate.error
                               ^^^^^^^^^^^^^^^^^^
Error: Unbound module Zlib_deflate

What am I missing?