* Release notes.
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NEWS
56
NEWS
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@ -1,6 +1,6 @@
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Version 0.9
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NOTE: this version of Nix used Berkeley DB 4.3 instead of 4.2. The
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NOTE: this version of Nix uses Berkeley DB 4.3 instead of 4.2. The
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database is upgraded automatically, but you should be careful not to
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use old versions of Nix that still use Berkeley DB 4.2. In
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particular, if you use a Nix installed through Nix, you should run
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@ -9,8 +9,8 @@ particular, if you use a Nix installed through Nix, you should run
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first.
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* Unpacking of patch sequences is much faster now by not doing
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redundant unpacking and repacking of intermediate paths.
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* Unpacking of patch sequences is much faster now since we no longer
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do redundant unpacking and repacking of intermediate paths.
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* Nix now uses Berkeley DB 4.3.
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@ -19,6 +19,56 @@ first.
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no data dependencies on the `outPath' and `drvPath' attributes
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computed by `derivation').
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For example, the expression `derivation attrs' now evaluates to
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(essentially)
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attrs // {
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type = "derivation";
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outPath = derivation! attrs;
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drvPath = derivation! attrs;
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}
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where `derivation!' is a primop that does the actual derivation
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instantiation (i.e., it does what `derivation' used to do). The
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advantage is that it allows commands such as `nix-env -qa' and
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`nix-env -i' to be much faster since they no longer need to
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instantiate all derivations, just the `name' attribute.
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Also, it allows derivations to cyclically reference each other, for
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example,
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webServer = derivation {
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...
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hostName = "svn.cs.uu.nl";
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services = [svnService];
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};
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svnService = derivation {
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...
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hostName = webServer.hostName;
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};
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Previously, this would yield a black hole (infinite recursion).
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* `nix-build' now defaults to using `./default.nix' if no Nix
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expression is specified.
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* `nix-instantiate', when applied to a Nix expression that evaluates
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to a function, will call the function automatically if all its
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arguments have defaults.
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* Nix now uses libtool to build dynamic libraries. This reduces the
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size of executables.
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* A new list concatenation operator `++'. For example, `[1 2 3] ++ [4
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5 6]' evaluates to `[1 2 3 4 5 6]'.
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* Some currently undocumented primops to support low-level build
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management using Nix (i.e., using Nix as a Make replacement). See
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the commit message for r3578 and r3580.
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* Various bug fixes and performance improvements.
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Version 0.8 (April 11, 2005)
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