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Environment Modules on Scientific Linux, CentOS, and Red Hat Enterprise Linux distributions in the environment-modules package include modules.csh and modules.sh scripts for the /etc/profile.d directory that make modules initialization part of the default shell initialization. One of the advantages of Environment Modules is a single modulefile ...
Inherited from the design of Nix, most of the content of the package manager is kept in a directory /gnu/store where only the Guix daemon has write-access. This is achieved via specialised bind mounts, where the Store as a file system is mounted read only, prohibiting interference even from the root user, while the Guix daemon remounts the Store as read/writable in its own private namespace.
Nix package manager: Nix is a package manager for Linux and other Unix-like systems that makes package management reliable and reproducible. It provides atomic upgrades and rollbacks, side-by-side installation of multiple versions of a package, multi-user package management and easy setup of build environments;
These directory names correspond to cryptographic hashes that take into account all dependencies of a package, including other packages managed by Nix. As a result, Nix package names are content-identifying since packages with the same name will have had the same inputs and the same build platform, and therefore the same build result. [7]
NixOS is a free and open source Linux distribution based on the Nix package manager.NixOS uses an immutable design and an atomic update model. [6] Its use of a declarative configuration system allows reproducibility and portability.
Snap is a software packaging and deployment system developed by Canonical for operating systems that use the Linux kernel and the systemd init system. The packages, called snaps, and the tool for using them, snapd, work across a range of Linux distributions [3] and allow upstream software developers to distribute their applications directly to users.
One option is to force a particular version of a package. This can downgrade a package and render dependent software inoperable, so the user must be careful. Finally, the apt_preferences mechanism allows the user to create an alternative installation policy for individual packages. The user can specify packages using a POSIX regular expression.
Void Linux [3] is an independent Linux distribution that uses the X Binary Package System (XBPS) package manager, which was designed and implemented from scratch, and the runit init system. Excluding binary kernel blobs , a base install is composed entirely of free software (but users can access an official non-free repository to install ...