use of lsb_release instead of /etc/os-release for getting OS information on linux

[kratsg]

In

setup-python/src/utils.ts

Lines 175 to 178 in 4f41a90

	export async function getLinuxInfo() {
	const {stdout} = await exec.getExecOutput('lsb_release', ['-i', '-r', '-s'], {
	silent: true
	});

the lsb_release legacy command line is relied upon for identifying linux distros. By now however, as part of systemd you should have /etc/os-release which should cover a vast majority if not all OSes that linux runners would be using (GitHub-hosted, Ubuntu-based self-hosted, or other non-Ubuntu-self-hosted otherwise).

Description:

The proposal would be to migrate from relying on the lsb_release executable in favor of the /etc/os-release and the contents there for identifying the OS information.

Justification:

Issues like #1214 and error messages on self-hosted runners such as Error: The version '3.13' with architecture 'x64' was not found for this operating system. are quite misleading because they indicate that setup-python has no x64 architecture for the operating system, when in actuality it is the operating system that setup-python does not support which is (frustratingly) hidden away in the advanced usage of the documentation.

Are you willing to submit a PR?

Yes, but I would not know how to test this.

[chiranjib-swain]

Hi @kratsg , Thank you for creating this issue. We will investigate it and provide feedback as soon as we have some updates.