272db8af1b
This does not add missing release notes, and it doesn't do anything about the profiles feature we would really like to have so we can have consistent credit. Change-Id: I72a6f7acfcff85f380be17dac76501a6f4693776
990 B
990 B
| synopsis | prs | cls | credits | significance | category |
|---|---|---|---|---|---|
| Add `repl-overlays` option | 10203 | 504 | 9999years | significant | Features |
A repl-overlays option has been added, which specifies files that can overlay
and modify the top-level bindings in nix repl. For example, with the
following contents in ~/.config/nix/repl.nix:
info: final: prev: let
optionalAttrs = predicate: attrs:
if predicate
then attrs
else {};
in
optionalAttrs (prev ? legacyPackages && prev.legacyPackages ? ${info.currentSystem})
{
pkgs = prev.legacyPackages.${info.currentSystem};
}
We can run nix repl and use pkgs to refer to legacyPackages.${currentSystem}:
$ nix repl --repl-overlays ~/.config/nix/repl.nix nixpkgs
Lix 2.90.0
Type :? for help.
Loading installable 'flake:nixpkgs#'...
Added 5 variables.
Loading 'repl-overlays'...
Added 6 variables.
nix-repl> pkgs.bash
«derivation /nix/store/g08b5vkwwh0j8ic9rkmd8mpj878rk62z-bash-5.2p26.drv»