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nix3-shell:tldr:3c6d5
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 variablenixpkgs
that contains the path to the Nix packages. The#pkg
notation could be a string manipulation that removes the prefix "pkg" from the value ofnixpkgs
. -
-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 variablesome-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.