jade
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»