Failing to install Conan Catch2/catchorg package due to case mismatch on macOS 10.14

[torfinnberset]

I've used to get Catch2 from the bincrafters repository, but I saw there was a deprecation warning that led me to use the catchorg repository. So I added the catchorg repository to conan, and tried installing it from this location. However, I am getting an error when trying to install the catchorg version:

conan install Catch2/2.5.0@catchorg/stable
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=10.0
os=Macos
[options]
[build_requires]
[env]

Catch2/2.5.0@catchorg/stable: Not found in local cache, looking in remotes...
Catch2/2.5.0@catchorg/stable: Trying with 'bloomlife'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan-community'...
Catch2/2.5.0@catchorg/stable: Trying with 'bincrafters'...
Catch2/2.5.0@catchorg/stable: Trying with 'catchorg'...
Downloading conanmanifest.txt
[==================================================] 1.4KB/1.4KB      
Downloading conanfile.py
[==================================================] 889B/889B        
Downloading conan_export.tgz
[==================================================] 891B/891B        
Decompressing conan_export.tgz: 100%|██████████| 891/891 [00:00<00:00, 420kB/s]
ERROR: Failed requirement 'Catch2/2.5.0@catchorg/stable' from 'PROJECT'
ERROR: Requested 'Catch2/2.5.0@catchorg/stable' but found case incompatible 'catch2'
Case insensitive filesystem can't manage this

So, I then naturally I tried to change change the case from Catch2 to catch2, but now there's another catch:

conan install catch2/2.5.0@catchorg/stable
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=10.0
os=Macos
[options]
[build_requires]
[env]

catch2/2.5.0@catchorg/stable: Not found in local cache, looking in remotes...
catch2/2.5.0@catchorg/stable: Trying with 'bloomlife'...
catch2/2.5.0@catchorg/stable: Trying with 'conan'...
catch2/2.5.0@catchorg/stable: Trying with 'conan-community'...
catch2/2.5.0@catchorg/stable: Trying with 'bincrafters'...
catch2/2.5.0@catchorg/stable: Trying with 'catchorg'...
ERROR: Failed requirement 'catch2/2.5.0@catchorg/stable' from 'PROJECT'
ERROR: Unable to find 'catch2/2.5.0@catchorg/stable' in remotes

So I guess this works on Windows, as it's case insensitive, but will break on Linux/BSD based systems. I was trying to look at the Conan sources in this repo to trace down the discrepancy, but no luck.

As a last comment, I'd prefer if the Catch2 package was available on conan-center, as adding more remotes for all our devs is error-prone and slows things down. Anyway, Catch2 is great no matter what 👍

[horenmar]

Try doing conan remove -f catch2/* before installing Catch2 from the new repository.

[torfinnberset]

Unfortunately the same issue:

$ conan remove -f catch2/
$ conan install Catch2/2.5.0@catchorg/stable
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=10.0
os=Macos
[options]
[build_requires]
[env]

Catch2/2.5.0@catchorg/stable: Not found in local cache, looking in remotes...
Catch2/2.5.0@catchorg/stable: Trying with 'bloomlife'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan-community'...
Catch2/2.5.0@catchorg/stable: Trying with 'bincrafters'...
Catch2/2.5.0@catchorg/stable: Trying with 'catchorg'...
Downloading conanmanifest.txt
[==================================================] 1.4KB/1.4KB      
Downloading conanfile.py
[==================================================] 889B/889B        
Downloading conan_export.tgz
[==================================================] 891B/891B        
Decompressing conan_export.tgz: 100%|██████████| 891/891 [00:00<00:00, 273kB/s]
ERROR: Failed requirement 'Catch2/2.5.0@catchorg/stable' from 'PROJECT'
ERROR: Requested 'Catch2/2.5.0@catchorg/stable' but found case incompatible 'catch2'
Case insensitive filesystem can't manage this

Some more info if it helps:

$  conan --version
Conan version 1.11.2

$ conan remote list
conan: https://bintray.com/conan/conan-center [Verify SSL: True]
conan-community: https://api.bintray.com/conan/conan-community/conan [Verify SSL: True]
bincrafters: https://api.bintray.com/conan/bincrafters/public-conan [Verify SSL: True]
catchorg: https://api.bintray.com/conan/catchorg/Catch2 [Verify SSL: True]

[Minimonium]

@torfinnberset Can you please check the contents of your .conan/data folder after the conan remove -f catch2 part?

[torfinnberset]

Hmm, I ran conan remove -f catch2 again, then did ls ~/.conan/data to verify that is was not there. Indeed there was nothing, so I re-ran conan install Catch2/2.5.0@catchorg/stable and now it passed

conan install Catch2/2.5.0@catchorg/stable
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=10.0
os=Macos
[options]
[build_requires]
[env]

Catch2/2.5.0@catchorg/stable: Not found in local cache, looking in remotes...
Catch2/2.5.0@catchorg/stable: Trying with 'bloomlife'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan'...
Catch2/2.5.0@catchorg/stable: Trying with 'conan-community'...
Catch2/2.5.0@catchorg/stable: Trying with 'bincrafters'...
Catch2/2.5.0@catchorg/stable: Trying with 'catchorg'...
Downloading conanmanifest.txt
[==================================================] 1.4KB/1.4KB      
Downloading conanfile.py
[==================================================] 889B/889B        
Downloading conan_export.tgz
[==================================================] 891B/891B        
Decompressing conan_export.tgz: 100%|██████████| 891/891 [00:00<00:00, 402kB/s]
Catch2/2.5.0@catchorg/stable: Installing package
Requirements
    Catch2/2.5.0@catchorg/stable from 'catchorg' - Downloaded
Packages
    Catch2/2.5.0@catchorg/stable:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Download

Catch2/2.5.0@catchorg/stable: Retrieving package 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 from remote 'catchorg' 
Downloading conanmanifest.txt
[==================================================] 1.0KB/1.0KB      
Downloading conaninfo.txt
[==================================================] 150B/150B        
Downloading conan_package.tgz
[==================================================] 110.0KB/110.0KB  
Decompressing conan_package.tgz: 100%|██████████| 107k/107k [00:00<00:00, 8.02MB/s]
Catch2/2.5.0@catchorg/stable: Package installed 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9

Anyway, thanks @Minimonium and @horenmar for your help. Something is flaky though, could be a Conan cache issue or something else. I will close this issue for now

[torfinnberset]

Well nevermind, just saw in my log that I initially typed conan remove -f catch2/ not conan remove -f catch2/*. Still, I don't think the issue should've happened in the first place, but I guess it's a Conan issue

[Minimonium]

@torfinnberset it could be macOS specific, I couldn't reproduce the error on Windows.

[Both are case insensitive afaik]

[torfinnberset]

@Minimonium only Windows is case insensitive AFAIK; macOS and Linux systems are case sensitive.

[Minimonium]

@torfinnberset then there is something fishy because of the error:

ERROR: Requested 'Catch2/2.5.0@catchorg/stable' but found case incompatible 'catch2'
Case insensitive filesystem can't manage this

[torfinnberset]

@Minimonium found a similar issue reported in Conan: conan-io/conan#1557