[package] <fmt>/<8.1.1>: Invalid setting 'baremetal' is not a valid 'settings.os' value.

[Ambrase]

Package and Environment Details (include every applicable attribute)

• Package Name/Version: fmt/8.1.1
• Operating System+version: Linux Centos 8.4.2105
• Compiler+version: GCC 9
• Conan version: conan 1.44.1
• Python version: Python 3.8

Conan profile (output of conan profile show default or conan profile show <profile> if custom profile is in use)

[settings]
os=Linux
os_build=Linux
arch=x86_64
arch_build=x86_64
compiler=gcc
compiler.version=9
compiler.libcxx=libstdc++11
build_type=Release
[options]
[conf]
[build_requires]
[env]

Steps to reproduce (Include if Applicable)

Try to install fmt/8.1.1

Fmt can't be installed for me anymore. It seems this recipe is incorrect to the current Conan version
https://conan.io/center/fmt?tab=recipe

        elif self.settings.os == "baremetal":

Conan raises the following error:
ERROR: fmt/8.1.1: Error in config_options() method, line 52
elif self.settings.os == "baremetal":
ConanException: Invalid setting 'baremetal' is not a valid 'settings.os' value.
Possible values are ['AIX', 'Android', 'Arduino', 'Emscripten', 'FreeBSD', 'Linux', 'Macos', 'Neutrino', 'SunOS', 'Windows', 'WindowsCE', 'WindowsStore', 'iOS', 'tvOS', 'watchOS']
Read "http://docs.conan.io/en/latest/faq/troubleshooting.html#error-invalid-setting"

[ivabrajer]

Same thing happening for fmt/8.0.1

Package and Environment Details (include every applicable attribute)

• Package Name/Version: fmt/8.0.1
• Operating System+version: Ubuntu 20.04.2 LTS
• Compiler+version: Clang v11.1.0
• Conan version: conan 1.44.1
• Python version: Python 3.8.10

Conan profile

[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=clang
compiler.cppstd=17
compiler.libcxx=libstdc++11
compiler.sanitizer=None
compiler.version=11
os=Linux
os_build=Linux
[options]
[build_requires]
[env]
CFLAGS=
CXXFLAGS=

[SpaceIm]

Your settings.yml is outdated. baremetal is a valid os identifier in conan 1.43.0

This issue is similar to #8550

/cc @memsharded @lasote, because it refers to how conan handles missing os or compiler identifier in settings.yml

[ivabrajer]

I don't think that's it. I've cleaned entire local Conan cache just in case and the issue is still happening. But I'll check it out once more tomorrow.

[SpaceIm]

At least it's in the release note of conan 1.43.0: https://github.com/conan-io/conan/releases/tag/1.43.0

[JorgenPo]

I had the similar issue and the solution that worked for me was:
In conan directory you should have settings.yml.new file with the new conan configuration, you need to merge or replace the settings.yml with settings.yml.new to solve the issue

[ivabrajer]

@JorgenPo Thanks, I confirm that updating settings.yml file helped and resolved the issue for me.