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Set environment variable NIX_SHELL_NAME to derivation name #2406

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Set environment variable NIX_SHELL_NAME to derivation name #2406

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kampka
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@kampka kampka commented Sep 7, 2018

When in a nix-shell environment, I like to have the derivation name exposed on my prompt.
At the moment this is a bit tricky to do, thus this change introduces an environment variable that exports the derivation name.

@copumpkin
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You should get this automatically today from the name environment variable. It's not uppercase or prefixed so might not feel like your average environment variable, but on the plus side behaves like all other derivation fields so is less special-casey. Does that suit your needs?

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kampka commented Sep 7, 2018

That is actually what I am currently doing, but it feels very implicit as name is a very ambiguous token.
The main purpose of this request is to make the use very explicit.

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kampka commented May 28, 2019

ping

Would be nice to have a decision (or discussion) either way.

@edolstra
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IMHO the combination of $IN_NIX_SHELL and $name already allows doing what you want.

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kampka commented May 29, 2019

True, but as I already said, this PR is not about making it possible, it's about making it explicitly clear what's what instead of relying on a generic token name $name.

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stale bot commented Feb 13, 2021

I marked this as stale due to inactivity. → More info

@stale stale bot added the stale label Feb 13, 2021
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stale bot commented Apr 16, 2022

I closed this issue due to inactivity. → More info

@stale stale bot closed this Apr 16, 2022
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@kampka @copumpkin @edolstra