nix3-shell:tldr:3c6d5

nix3-shell: Run a command in a shell with a package.

$ nix shell ${nixpkgs#pkg} -c ${some-cmd --someflag 'Some other arguments'}

try on your machine

This command appears to be using the package manager Nix to enter a shell environment and execute a specific command.

Here is a breakdown of the command:

nix shell: This starts a new shell session with the given Nix environment. It ensures that the specified packages and their dependencies are available within the shell.
${nixpkgs#pkg}: This likely refers to a variable nixpkgs that contains the path to the Nix packages. The #pkg notation could be a string manipulation that removes the prefix "pkg" from the value of nixpkgs.
-c: This option is used to provide a command that will be executed within the shell. It allows you to run a specific command without having to manually enter the shell environment.
${some-cmd --someflag 'Some other arguments'}: This likely refers to another variable some-cmd that holds the name of the command you want to execute. The --someflag 'Some other arguments' part specifies command-line arguments to be passed to that command.

To summarize, the command starts a new Nix shell session with the specified package's environment, and then executes the provided command some-cmd with the given arguments.

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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