Userscan Alternatives
Similar projects and alternatives to userscan
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InfluxDB
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userscan reviews and mentions
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I Love Arch, but GNU Guix Is My New Distro
* having to rebuild some packages that are not part of your main OS configuration because you upgraded your main OS (e.g., Arch updates breaking AUR packages, or system upgrades breaking software you compiled manually or your Python virtualenvs, etc.). (You do have to inform the package manager that you don't want these externally-depended-on packages garbage collected, though. For Nix, for example, you can do that automagically by running fc-userscan against your project directories: https://github.com/flyingcircusio/userscan )
The statelessness is related to reproducibility in that it's a result of the functional package management approach to reproducibility. Since every version of your whole system is generated without reference to previous versions (indeed, from scratch!), the OS never has to navigate state transitions for its packages. It doesn't have to worry about converting configuration files from one format to another, or replacing defaults, or the implicit dependencies of your system undergoing name changes or being replaced. Nix and Guix don't need Debian-style transitional packages and similar tricks. That means you aren't punished, on a per-package basis, for not updating your system constantly.
For example, I recently took some neglected, non-internet-facing NixOS servers and updated them from an early 2018 release of NixOS to the latest NixOS unstable rolling release. While I did have to first work a forward incompatibility issue in Nix itself, the rest of the upgrade was a single step, and I didn't have to worry about finding a valid ‘upgrade path’.
It's worth noting that in a strict sense, the reproducibility is all still there, even for NixOS releases that no longer receive updates. If you need to use an old version of some piece of software for compatibility reasons, in a safe environment, you can use the latest and greatest Nix to install packages from NixOS releases that are 2 or 4 or 6 or 8 years old— including on top of a bleeding edge system running NixOS Unstable.
But you have a point: it would be awesome if there were long-term releases, you would get a different kind of reproducibility— one which is less strict but more useful in some ways. For example, you could take a Nix expression that someone posted in a Gist on GitHub 4 years ago, for what was back then the latest NixOS stable release. If that release were also an LTS, you could not just reproduce what they actually had, but apply it against the latest version of the same LTS to get a system that should be totally compatible in terms of behavior, but suitable for running in production without modification, thanks to up-to-date security patches.
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flyingcircusio/userscan is an open source project licensed under BSD 3-clause "New" or "Revised" License which is an OSI approved license.
The primary programming language of userscan is Rust.
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