freezegun VS nixpkgs

* in C++.

On Python, just use freezegun to inject controllable timestamps in response to calls to time methods.

https://github.com/spulec/freezegun

I had much fun with https://github.com/spulec/freezegun

If you're ever in Python-land, freezegun is a super neat library that snags all the time/date related functions and lets you control time from code.

For example, freezegun which is a common testing utility.

FreezeGun is a library that helps with mocking out the datetime.datetime.now function. It is a very useful tool for testing code that uses the datetime library.

Another way of doing so would be to inject the value directly to the method. Python has a very good library to sandbox the tests when using the built-in datetime objects: freezegun. Once again, and unfortunately for us, the project was using arrow so this was not a possibility.

If you do time sensitive tests, use freeze gun to make them reproducible https://github.com/spulec/freezegun

I don't think so. The article is probably intended for the Nix community, so the author doesn't need to convince HN that something is going on. If as an outsider you are interested then you need to look into it yourself, the community has no obligation to make their internal conflicts legible to the outside world.

As an outsider myself, it certainly looks like something is going on as more than 20 Nixpkg maintainers left in a week: https://github.com/NixOS/nixpkgs/issues?q=label%3A%228.has%3...

https://github.com/NixOS/nixpkgs/commits?author=neon-sunset

I see two signers in the top 6 displayed on https://github.com/NixOS/nixpkgs/graphs/contributors

For a single file script, nix can make the package management quite easy: https://github.com/NixOS/nixpkgs/blob/master/doc/languages-f...

For example,

```

Yes, Nix doesn't actually ensure that the builds are deterministic. In fact it works just fine if they aren't. There are packages in nixpkgs that aren't reproducible: https://github.com/NixOS/nixpkgs/issues?q=is%3Aopen+is%3Aiss...

I'm not familiar with Bazel, but Nix in it's current form wouldn't have solved this attack. First of all, the standard mkDerivation function calls the same configure; make; make install process that made this attack possible. Nixpkgs regularly pulls in external resources (fetchUrl and friends) that are equally vulnerable to a poisoned release tarball. Checkout the comment on the current xz entry in nixpkgs https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/comp...

NixOS uses a monorepo and I think everyone's love it.

I love being able to easily grep through all the packages source code and there's regularly PRs that harmonizes conventions across many packages.

Nixpkgs doesn't include the packaged software source code, so it's a lot more practical than what Debian is doing.

https://github.com/NixOS/nixpkgs

In this specific case, nix uses fetchFromGitHub to download the source archive, which are generated by GitHub for the specified revision[1]. Arch seems to just download the tarball from the releases page[2].

[1]: https://github.com/NixOS/nixpkgs/blob/3c2fdd0a4e6396fc310a6e...

[2]: https://gitlab.archlinux.org/archlinux/packaging/packages/ib...