Build a nightly cosmocc artifact

[jcbhmr]

Using https://nightly.link/ with GitHub actions artifacts you can have a nightly build (but not a release -- there's no releasing or pre-releasing happening) of cosmocc.

Example URL if this PR were merged:

https://nightly.link/jart/cosmopolitan/workflows/nightly-cosmocc/master/cosmocc.zip

Or you can just download it directly from the GitHub "Actions" https://github.com/jart/cosmopolitan/actions workflow summary page of a particular run

example from my own fork:

could download by clicking on the artifact

or by using third-party service to provide a link for unauthenticated requests (like wget or curl)
https://nightly.link/jcbhmr/cosmopolitan/workflows/tool-cosmocc-package-sh/master/cosmocc.zip

this would be useful for users who don't want to or can't figure out how to build cosmocc themselves (like Windows) but still want to use a nightly build since a fix hasn't been released as a release version yet.

this would also be a good way to test the release process but instead of pushing the cosmocc.zip to wherever it goes now you publish it as a github actions artifact for the very few nightly bleeding edge users to use & test.

you don't have to use https://nightly.link or recommend it or anything; i just know its a cool way to wget or curl the URLs instead of downloading it via your browser web UI. particularly useful for remote/ssh/web-ide development.

[G4Vi]

Seems reasonable to me.

Have you sent Justine the copyright assignment email? https://github.com/jart/cosmopolitan/blob/master/CONTRIBUTING.md#copyright-assignment

[jart]

Approved for copyright