Stabilise nix nar subcommands

[vicky1999]

Motivation

• Renamed the command nar dump-path to nar pack

Context

This change is required in #8875

Changes made:

• Renamed dump-path.cc to pack.cc
• Renamed nar-dump-path.md to nar-pack.md

Screenshot

Priorities

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[edolstra]

Can you add a backwards compatibility alias in NixArgs::NixArgs() in src/nix/main.cc?

We should probably also rename nix store dump-path at the same time.

[vicky1999]

Sure, I am working on that as part of #8914

[vicky1999]

@edolstra I tried to implement aliasing in main.cc. But, when trying to build the project and run with nix-shell, I am getting this error:

I haven't faced this error before and this issue arised after taking the latest changes in master. Kindly please let me know if I am doing something wrong.

[fricklerhandwerk]

I'm confused by this.

1. Why do you start nix-shell with sudo? This should never be necessary, even on WSL.

2. Where does the import <nixpkgs> come from? The shell takes its inputs from flake.nix where they are all pinned.

Please refer to the reference manual for building Nix. Seek help for such troubleshooting on the community platforms (Discourse, Matrix), providing exact steps for reproducing your problem.

Unfortunately it's impractical for maintainers to assist with this kind of debugging in full detail, as that would eat into the time for our prioritised activities, which is already very little compared to the number of open issues and PRs. Doing this in-band would also flood the PR timeline with immaterial discussion, making it harder to keep track of for everyone.

Don't get discouraged though. We're very happy that you're taking the time to help out and will guide you to get your work in if you stick at it.