mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-12-01 18:16:14 +02:00
eb7d7780b1
This is needed to avoid this https://github.com/mesonbuild/meson/issues/13774 when we go back to making our subproject directory `src`.
72 lines
2.7 KiB
Markdown
72 lines
2.7 KiB
Markdown
# Release 1.6 (2013-09-10)
|
||
|
||
In addition to the usual bug fixes, this release has several new
|
||
features:
|
||
|
||
- The command `nix-build --run-env` has been renamed to `nix-shell`.
|
||
|
||
- `nix-shell` now sources `$stdenv/setup` *inside* the interactive
|
||
shell, rather than in a parent shell. This ensures that shell
|
||
functions defined by `stdenv` can be used in the interactive shell.
|
||
|
||
- `nix-shell` has a new flag `--pure` to clear the environment, so you
|
||
get an environment that more closely corresponds to the “real” Nix
|
||
build.
|
||
|
||
- `nix-shell` now sets the shell prompt (`PS1`) to ensure that Nix
|
||
shells are distinguishable from your regular shells.
|
||
|
||
- `nix-env` no longer requires a `*` argument to match all packages,
|
||
so `nix-env -qa` is equivalent to `nix-env
|
||
-qa '*'`.
|
||
|
||
- `nix-env -i` has a new flag `--remove-all` (`-r`) to remove all
|
||
previous packages from the profile. This makes it easier to do
|
||
declarative package management similar to NixOS’s
|
||
`environment.systemPackages`. For instance, if you have a
|
||
specification `my-packages.nix` like this:
|
||
|
||
with import <nixpkgs> {};
|
||
[ thunderbird
|
||
geeqie
|
||
...
|
||
]
|
||
|
||
then after any change to this file, you can run:
|
||
|
||
$ nix-env -f my-packages.nix -ir
|
||
|
||
to update your profile to match the specification.
|
||
|
||
- The ‘`with`’ language construct is now more lazy. It only evaluates
|
||
its argument if a variable might actually refer to an attribute in
|
||
the argument. For instance, this now works:
|
||
|
||
let
|
||
pkgs = with pkgs; { foo = "old"; bar = foo; } // overrides;
|
||
overrides = { foo = "new"; };
|
||
in pkgs.bar
|
||
|
||
This evaluates to `"new"`, while previously it gave an “infinite
|
||
recursion” error.
|
||
|
||
- Nix now has proper integer arithmetic operators. For instance, you
|
||
can write `x + y` instead of `builtins.add x y`, or `x <
|
||
y` instead of `builtins.lessThan x y`. The comparison operators also
|
||
work on strings.
|
||
|
||
- On 64-bit systems, Nix integers are now 64 bits rather than 32 bits.
|
||
|
||
- When using the Nix daemon, the `nix-daemon` worker process now runs
|
||
on the same CPU as the client, on systems that support setting CPU
|
||
affinity. This gives a significant speedup on some systems.
|
||
|
||
- If a stack overflow occurs in the Nix evaluator, you now get a
|
||
proper error message (rather than “Segmentation fault”) on some
|
||
systems.
|
||
|
||
- In addition to directories, you can now bind-mount regular files in
|
||
chroots through the (now misnamed) option `build-chroot-dirs`.
|
||
|
||
This release has contributions from Domen Kožar, Eelco Dolstra, Florian
|
||
Friesdorf, Gergely Risko, Ivan Kozik, Ludovic Courtès and Shea Levy.
|