nix3-build:tldr:1906f

nix3-build: Build a package from nixpkgs, symlinking the result to `./result`.

$ nix build ${nixpkgs#pkg}

try on your machine

The command nix build ${nixpkgs#pkg} is a shell command that utilizes the nix package manager. Here's a breakdown of its components:

nix: It refers to the nix command-line tool, which is used for package management in the Nix ecosystem. It allows users to build, install, and manage software packages.
build: It is a command provided by the nix tool that instructs Nix to build a specified package or expression.
${nixpkgs#pkg}: This is a parameter or argument passed to the nix build command. It utilizes the (bash) parameter expansion syntax. Let's break it down further:
- ${nixpkgs}: nixpkgs is typically an environment variable that holds the path to the Nix package set. The package set contains a collection of packages available for installation or building using Nix.
- #pkg: This part utilizes the parameter expansion syntax to remove the pkg suffix from the value of the nixpkgs variable. The # symbol denotes the start of the pattern, and pkg represents the pattern to be removed.

Therefore, the command nix build ${nixpkgs#pkg} would build a package specified by the value of the nixpkgs variable, removing the pkg suffix from it. The exact purpose and functionality of this command depend on the context and specific use case where it is being used.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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