Could not load symbol "gzopen64"

[ZongyuLi-umich]

I got the following error message from tst_mnist.jl when I ran ] test MLDatasets:

Got exception outside of a @test could not load symbol "gzopen64": dlsym(0xfff153c1b3a0, gzopen64): symbol not found

Test Summary: | Pass Error Total tst_mnist.jl | 18 90 108 Constants | 7 7 convert2images | 11 11 File Header | 4 4 Images | 72 72 Test that traintensor are the train images | 30 30 Test that testtensor are the test images | 30 30 traintensor with T=Float32 | 1 1 traintensor with T=Float64 | 1 1 traintensor with T=N0f8 | 1 1 traintensor with T=Int64 | 1 1 traintensor with T=UInt8 | 1 1 testtensor with T=Float32 | 1 1 testtensor with T=Float64 | 1 1 testtensor with T=N0f8 | 1 1 testtensor with T=Int64 | 1 1 testtensor with T=UInt8 | 1 1 Labels | 12 12 trainlabels | 1 1 testlabels | 1 1 Data | 2 2 check traindata against traintensor and trainlabels | 1 1 check testdata against testtensor and testlabels | 1 1 ERROR: LoadError: Some tests did not pass: 18 passed, 0 failed, 90 errored, 0 broken.

I tried reinstalling the package but it didn't work.
My OS is MacOS Monterey 12.0.1, and I am using Julia v1.6.3
with MLDatasets version v0.5.13.

[CarloLucibello]

not sure what is going on here, we test on macos and tests do pass. Maybe you have some problems with the GZip.jl package

[ZongyuLi-umich]

not sure what is going on here, we test on macos and tests do pass. Maybe you have some problems with the GZip.jl package

Thanks for your answer! I tried reinstall GZip.jl but it still didn't work, maybe there's something dealing with MacOS Monterey, I remembered I didn't have this issue before I update the OS.

[logankilpatrick]

I am getting the same issue on macOS. I am trying to run the code from here: https://fluxml.ai/tutorials/2021/02/07/convnet.html and get:

ERROR: LoadError: could not load symbol "gzopen64":
dlsym(0xfff147d636b0, gzopen64): symbol not found
Stacktrace:

[logankilpatrick]

See the issue above, I can reproduce this outside of MLDatasets.

[logankilpatrick]

@CarloLucibello the reason CI doesn't pick this up is that macOS-latest points to an old macOS version: https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions#github-hosted-runners

[CarloLucibello]

It would be good to switch to https://github.com/JuliaIO/CodecZlib.jl, seems a bit more maintained than GZip.jl
It was attempted in #20 but never completed