User Environment: Difference between revisions

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==== Profiles ====

In the opening of the {{Nix Manual|name=Nix Manual - Basic Package Management chapter|anchor=#ch-~~basic-package-mgmt~~}}:

In the opening of the {{Nix Manual|name=Nix Manual - Basic Package Management chapter|anchor=#sec-profiles}}:

<blockquote>Profiles and '''''user environments''''' are Nix’s mechanism for implementing the ability to allow different users to have different configurations, and to do atomic upgrades and rollbacks. To understand how they work, it’s useful to know a bit about how Nix works. In Nix, packages are stored in unique locations in the Nix store (typically, ''/nix/store''). For instance, a particular version of the Subversion package might be stored in a directory ''/nix/store/dpmvp969yhdqs7lm2r1a3gng7pyq6vy4-subversion-1.1.3/'', while another version might be stored in ''/nix/store/5mq2jcn36ldlmh93yj1n8s9c95pj7c5s-subversion-1.1.2''. The long strings prefixed to the directory names are cryptographic hashes[1] of all inputs involved in building the package — sources, dependencies, compiler flags, and so on. So if two packages differ in any way, they end up in different locations in the file system, so they don’t interfere with each other. Figure 10.1, “''User environments''” shows a part of a typical Nix store.

@@ Line 25: / Line 25: @@
 ==== Profiles ====
-In the opening of the {{Nix Manual|name=Nix Manual - Basic Package Management chapter|anchor=#ch-basic-package-mgmt}}:
+In the opening of the {{Nix Manual|name=Nix Manual - Basic Package Management chapter|anchor=#sec-profiles}}:
 <blockquote>Profiles and '''''user environments''''' are Nix’s mechanism for implementing the ability to allow different users to have different configurations, and to do atomic upgrades and rollbacks. To understand how they work, it’s useful to know a bit about how Nix works. In Nix, packages are stored in unique locations in the Nix store (typically, ''/nix/store''). For instance, a particular version of the Subversion package might be stored in a directory ''/nix/store/dpmvp969yhdqs7lm2r1a3gng7pyq6vy4-subversion-1.1.3/'', while another version might be stored in ''/nix/store/5mq2jcn36ldlmh93yj1n8s9c95pj7c5s-subversion-1.1.2''. The long strings prefixed to the directory names are cryptographic hashes[1] of all inputs involved in building the package — sources, dependencies, compiler flags, and so on. So if two packages differ in any way, they end up in different locations in the file system, so they don’t interfere with each other. Figure 10.1, “''User environments''” shows a part of a typical Nix store.