diff --git a/doc/manual/release-notes/rl-2.2.xml b/doc/manual/release-notes/rl-2.2.xml
index abe9b49ad..d29eb87e8 100644
--- a/doc/manual/release-notes/rl-2.2.xml
+++ b/doc/manual/release-notes/rl-2.2.xml
@@ -4,25 +4,139 @@
version="5.0"
xml:id="ssec-relnotes-2.2">
-Release 2.2 (201?-??-??)
+Release 2.2 (2019-01-11)
-This release has the following changes:
+This is primarily a bug fix release. It also has the following
+changes:
+
+ In derivations that use structured attributes (i.e. that
+ specify set the __structuredAttrs attribute to
+ true to cause all attributes to be passed to
+ the builder in JSON format), you can now specify closure checks
+ per output, e.g.:
+
+
+outputChecks."out" = {
+ # The closure of 'out' must not be larger than 256 MiB.
+ maxClosureSize = 256 * 1024 * 1024;
+
+ # It must not refer to C compiler or to the 'dev' output.
+ disallowedRequisites = [ stdenv.cc "dev" ];
+};
+
+outputChecks."dev" = {
+ # The 'dev' output must not be larger than 128 KiB.
+ maxSize = 128 * 1024;
+};
+
+
+
+
+
+
The derivation attribute
requiredSystemFeatures is now enforced for
local builds, and not just to route builds to remote builders.
The supported features of a machine can be specified through the
- configuration setting system-features.
-
+ configuration setting system-features.
+
+ By default, system-features includes
+ kvm if /dev/kvm
+ exists. For compatibility, it also includes the pseudo-features
+ nixos-test, benchmark and
+ big-parallel which are used by Nixpkgs to route
+ builds to particular Hydra build machines.
+
Sandbox builds are now enabled by default on Linux.
+
+ The new command nix doctor shows
+ potential issues with your Nix installation.
+
+
+
+ The fetchGit builtin function now uses a
+ caching scheme that puts different remote repositories in distinct
+ local repositories, rather than a single shared repository. This
+ may require more disk space but is faster.
+
+
+
+ The dirOf builtin function now works on
+ relative paths.
+
+
+
+ Nix now supports SRI hashes,
+ allowing the hash algorithm and hash to be specified in a single
+ string. For example, you can write:
+
+
+import <nix/fetchurl.nix> {
+ url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz;
+ hash = "sha256-XSLa0FjVyADWWhFfkZ2iKTjFDda6mMXjoYMXLRSYQKQ=";
+};
+
+
+ instead of
+
+
+import <nix/fetchurl.nix> {
+ url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz;
+ sha256 = "5d22dad058d5c800d65a115f919da22938c50dd6ba98c5e3a183172d149840a4";
+};
+
+
+
+
+ In fixed-output derivations, the
+ outputHashAlgo attribute is no longer mandatory
+ if outputHash specifies the hash.
+
+ nix hash-file and nix
+ hash-path now print hashes in SRI format by
+ default. They also use SHA-256 by default instead of SHA-512
+ because that's what we use most of the time in Nixpkgs.
+
+
+
+ Integers are now 64 bits on all platforms.
+
+
+
+ The evaluator now prints profiling statistics (enabled via
+ the NIX_SHOW_STATS and
+ NIX_COUNT_CALLS environment variables) in JSON
+ format.
+
+
+
+ The option in nix-store
+ --query has been removed. Instead, there now is an
+ option to output the dependency graph
+ in GraphML format.
+
+
+
+ All nix-* commands are now symlinks to
+ nix. This saves a bit of disk space.
+
+
+
+ nix repl now uses
+ libeditline or
+ libreadline.
+
+