Conan: Make hash depending on linux distro

[jabaa]

I'm using a ncurses conan package for some projects. In configuration of ncurses the path to terminfo is set. This path depends on the linux distribution. On ubuntu it is /lib and on centos it is /usr/share. Therefor I use OSInfo to determine the distro:

def build(self):
    env_build = AutoToolsBuildEnvironment(self)
    args = ["--without-debug"]
    if self.options.shared:
        args += ["--with-shared", "--without-normal"]
    info = OSInfo()
    if info.is_linux and info.linux_distro in ("debian", "ubuntu"):
        args += ["--datadir=/lib"]
    env_build.configure(configure_dir="src", args=args, build=False, host=False, target=False)
    env_build.make()

The settings tuple contains:

"os", "compiler", "build_type", "arch"

As far as I understand following can happen.

1. I build this package on ubuntu and upload the package.

2. I use a centos with same compiler, arch and build_type.

3. Conan genrates the same hash on centos and ubuntu and downloads the ubuntu package on centos with wrong datadir.

How can I avoid this problem? I'd like to add something like os.distro into the settings tuple.

[memsharded]

Yes, the best solution would be to augment the settings.yml with something like:

os:
    ...
    WindowsStore:
        version: ["8.1", "10.0"]
    Linux:
         distro: ["Ubuntu", "RHEL6", ...]

As it is a subsetting of os for Linux, it will generate different packages in the different distros.
You probably want to add distro=Ubuntu, etc., in your profiles and default profiles

Please remember that both the settings.yml and the profiles can be shared automatically with conan config install command.

[danimtb]

As this a common question, I have opened an issue in the docs to add it to the FAQ: conan-io/docs#1137

I think the solution is pretty clear so I am considering this question as solved, but please feel free to comment any other idea.
Thanks!