mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-09-22 17:28:05 +03:00
73 lines
2.4 KiB
Markdown
73 lines
2.4 KiB
Markdown
|
# Release 0.9 (2005-09-16)
|
||
|
|
|
||
|
|
NOTE: this version of Nix uses Berkeley DB 4.3 instead of 4.2. The
|
||
|
|
database is upgraded automatically, but you should be careful not to use
|
||
|
|
old versions of Nix that still use Berkeley DB 4.2. In particular, if
|
||
|
|
you use a Nix installed through Nix, you should run
|
||
|
|
|
||
|
|
$ nix-store --clear-substitutes
|
||
|
|
|
||
|
|
first.
|
||
|
|
|
||
|
|
- Unpacking of patch sequences is much faster now since we no longer
|
||
|
|
do redundant unpacking and repacking of intermediate paths.
|
||
|
|
|
||
|
|
- Nix now uses Berkeley DB 4.3.
|
||
|
|
|
||
|
|
- The `derivation` primitive is lazier. Attributes of dependent
|
||
|
|
derivations can mutually refer to each other (as long as there are
|
||
|
|
no data dependencies on the `outPath` and `drvPath` attributes
|
||
|
|
computed by `derivation`).
|
||
|
|
|
||
|
|
For example, the expression `derivation
|
||
|
|
attrs` now evaluates to (essentially)
|
||
|
|
|
||
|
|
attrs // {
|
||
|
|
type = "derivation";
|
||
|
|
outPath = derivation! attrs;
|
||
|
|
drvPath = derivation! attrs;
|
||
|
|
}
|
||
|
|
|
||
|
|
where `derivation!` is a primop that does the actual derivation
|
||
|
|
instantiation (i.e., it does what `derivation` used to do). The
|
||
|
|
advantage is that it allows commands such as `nix-env -qa` and
|
||
|
|
`nix-env -i` to be much faster since they no longer need to
|
||
|
|
instantiate all derivations, just the `name` attribute.
|
||
|
|
|
||
|
|
Also, it allows derivations to cyclically reference each other, for
|
||
|
|
example,
|
||
|
|
|
||
|
|
webServer = derivation {
|
||
|
|
...
|
||
|
|
hostName = "svn.cs.uu.nl";
|
||
|
|
services = [svnService];
|
||
|
|
};
|
||
|
|
|
||
|
|
svnService = derivation {
|
||
|
|
...
|
||
|
|
hostName = webServer.hostName;
|
||
|
|
};
|
||
|
|
|
||
|
|
Previously, this would yield a black hole (infinite recursion).
|
||
|
|
|
||
|
|
- `nix-build` now defaults to using `./default.nix` if no Nix
|
||
|
|
expression is specified.
|
||
|
|
|
||
|
|
- `nix-instantiate`, when applied to a Nix expression that evaluates
|
||
|
|
to a function, will call the function automatically if all its
|
||
|
|
arguments have defaults.
|
||
|
|
|
||
|
|
- Nix now uses libtool to build dynamic libraries. This reduces the
|
||
|
|
size of executables.
|
||
|
|
|
||
|
|
- A new list concatenation operator `++`. For example, `[1 2 3] ++
|
||
|
|
[4 5
|
||
|
|
6]` evaluates to `[1 2 3 4 5
|
||
|
|
6]`.
|
||
|
|
|
||
|
|
- Some currently undocumented primops to support low-level build
|
||
|
|
management using Nix (i.e., using Nix as a Make replacement). See
|
||
|
|
the commit messages for `r3578` and `r3580`.
|
||
|
|
|
||
|
|
- Various bug fixes and performance improvements.
|