Added how to double check that nix develop worked

[matthiasdebernardini]

[codecov-commenter]

Codecov Report

Merging #453 (6a85f50) into master (10398d5) will not change coverage. The diff coverage is n/a.

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  Coverage   74.54%   74.54%           
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  Files          83       83           
  Lines       10550    10550           
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  Hits         7865     7865           
  Misses       2685     2685           

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[NicolaLS]

Nice :) Was just talking with @dpc about this. He suggested altering PS1 in bashrc (or other) like this:

  set -l nix_shell_info (
      if test -n "$IN_NIX_SHELL"
            echo -n "{NS} "
      end
    )
    echo -n -s "$nix_shell_info"

maybe this could be added to the readme

[NicolaLS]

Nice :) Was just talking with @dpc about this. He suggested altering PS1 in bashrc (or other) like this:

  set -l nix_shell_info (
      if test -n "$IN_NIX_SHELL"
            echo -n "{NS} "
      fi
    )
    echo -n -s "$nix_shell_info"

maybe this could be added to the readme

(thats his settup not a copy and paste solution (I just noticed))

[justinmoon]

Also, gotta rebase now.

[dpc]

@NicolaLS For bash something like:

export PS1="$(test -n "$IN_NIX_SHELL" && echo "NX") $PS1"

should do. It can be added to ~/.bashrc at the bottom.

[NicolaLS]

@dpc noticed this didnt really work for me I ended up doing something like:

if [[ -z $IN_NIX_SHELL ]]; then
        export PS1="nix-dev $PS1";
fi

@matthiasdebernardini maybe check if you want to change to this

[NicolaLS]

@dpc noticed this didnt really work for me I ended up doing something like:

if [[ -z $IN_NIX_SHELL ]]; then
        export PS1="nix-dev $PS1";
fi

@matthiasdebernardini maybe check if you want to change to this

Sorry just noticed this dosn't work either. Your ps1 will not revert back to normal..I'll post something else

[NicolaLS]

Ok finally:

function set_custom_prompt {
#added on Aug. 23 to know when in nix develop
	if [[ "$IN_NIX_SHELL" = "impure" ]]; then
		export PS1="nix-dev";
	else
		export PS1="λ \W "; #put your default ps1 here
	fi

}

PROMPT_COMMAND='set_custom_prompt'

This also resets the PS1. Since this his so highly custom idk if this should go in the readme but wanted to correct my previous comment which was wrong. @matthiasdebernardini