Conan-center-index: [question] How do you install packages from the new conan center remote?

[egendron93]

I am trying to install the boost/1.72.0 package from the new conan center remote (https://conan.io/center/).

My current remotes are:

conan-center: https://conan.bintray.com [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]

The conan install command I am using is:

conan install boost/1.72.0@conan/stable

The current output is:

conan install boost/1.72.0@conan/stable
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=9
os=Linux
os_build=Linux
[options]
[build_requires]
[env]

boost/1.72.0@conan/stable: Not found in local cache, looking in remotes...
boost/1.72.0@conan/stable: Trying with 'conan-center'...
boost/1.72.0@conan/stable: Trying with 'conan-community'...
boost/1.72.0@conan/stable: Trying with 'bincrafters'...
ERROR: Unable to find 'boost/1.72.0@conan/stable' in remotes

I did not see anything in the documentation about the new conan center changing it's remote URL. Is there a new URL or is the new conan center not yet available to the public?

[egendron93]

conan --version
Conan version 1.22.0

[ericLemanissier]

as indicated on https://conan.io/center/boost/1.72.0/?user=_&channel=_ you need to use boost/1.72.0 without @conan/stable

[Croydon]

No, the remote is the same for conan-center

You need to remove the @user/channel

Instead of boost/1.72.0@conan/stable it is boost/1.72.0 for conanfiles

Or in the command it is conan install boost/1.72.0@

PS: @ericLemanissier was faster
PSS: the @conan/stable ending is for packages originating from conan-community

[egendron93]

The @ without the rest of the reference is what i was missing, thank you. Is there some documentation for this? I looked around but didn't seem to find anything mentioning adding the @ without the rest of the reference.

Without the @ it acts as if I'm installing with just the path argument.

conan install boost/1.72.0 
ERROR: Conanfile not found at /workspaces/project/boost/1.72.0

[Croydon]

Adding just the @ is just for CLI commands.
If you have a conanfile.py or conanfile.txt you don't need the @ for recipe references

The reason is backwards compatibility for existing CLI calls. A command like conan create . bincrafters/stable interprets the last argument as user/branch, while calls with @ like conan create . boost/1.72.0@ are interpreted as recipe/version

[danimtb]

Thanks for reporting. I was recently thinking about this and stating clearly in the readme of this repo how to consume the packages generated by this service. I will create an issue to improve that