What term describes software packages that have been tested and known to install correctly in the distribution environment?

The term that describes software packages which have been tested and are known to install correctly in the distribution environment is "repository." In the context of Linux and other operating systems, a repository is a centralized store where software packages are stored, maintained, and made available for installation. These packages in a repository are typically curated, meaning that they have undergone testing to ensure compatibility and stability within a specific distribution.

When users or system administrators access a repository, they can install, update, and manage software with confidence that it has been validated, reducing the potential for conflicts or issues during installation. This makes repositories a crucial component of package management systems in Linux distributions, as they streamline the process of software installation and maintenance.

In contrast, a library refers to a collection of pre-written code that developers can use in their applications but does not imply validation for end-user installation. An archive generally refers to a file that contains multiple files, often used for backup or storage purposes, but it does not imply tested software packages for a distribution. A bundle usually refers to a packaged set of software components that may or may not have been verified for the specific distribution environment. Thus, the repository concept emphasizes the assurance of quality and compatibility in software package distribution.