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* More release notes.

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This commit is contained in:
Eelco Dolstra 2007-12-31 00:08:09 +00:00
parent b5ddcf58ad
commit dedd62dd0c
2 changed files with 46 additions and 2 deletions
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44
doc/manual/release-notes.xml
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@ -129,6 +129,22 @@ list:</para>
environment.</para></listitem>
<listitem><para><command>nix-env -i / -u</command>: instead of
breaking package ties by version, break them by priority and version
number. That is, if there are multiple packages with the same name,
then pick the package with the highest priority, and only use the
version if there are multiple packages with the same
priority.</para>
<para>This makes it possible to mark specific versions/variant in
Nixpkgs more or less desirable than others. A typical example would
be a beta version of some package (e.g.,
<literal>gcc-4.2.0rc1</literal>) which should not be installed even
though it is the highest version, except when it is explicitly
selected (e.g., <literal>nix-env -i
gcc-4.2.0rc1</literal>).</para></listitem>
<listitem><para><command>nix-env --set-flag</command> allows
meta attributes of installed packages to be modified. There are
several attributes that can be usefully modified, because they
@ -215,7 +231,35 @@ list:</para>
the indentation of the surrounding expression. It also requires
much less escaping, since <literal>''</literal> is less common in
most languages than <literal>"</literal>.</para></listitem>
<listitem><para>The new command <command>nix-store
--optimise</command> reduces Nix store disk space usage by finding
identical files in the store and hard-linking them to each other.
It typically reduces the size of the store by something like
25-35%.</para></listitem>
<listitem><para>Allow <filename>~/.nix-defexpr</filename> to be a
directory, in which case the Nix expressions in that directory are
combined into an attribute set, with the file names used as the
names of the attributes. The command <command>nix-env
--import</command> (which set the
<filename>~/.nix-defexpr</filename> symlink) is
removed.</para></listitem>
<listitem><para>Fixed-output derivations (like
<function>fetchurl</function>) can define the attribute
<varname>impureEnvVars</varname> to allow external environment
variables to be passed to builders. This is used in Nixpkgs to
support proxy configuration, among other things.</para></listitem>
<listitem><para><command>nix-pull</command> now supports
bzip2-compressed manifests. This speeds up
channels.</para></listitem>
</itemizedlist>

4
src/libexpr/primops.cc
View file

@ -917,8 +917,8 @@ static Expr prim_toString(EvalState & state, const ATermVector & args)
}
/* `substr start len str' returns the substring of `str' starting at
character position `min(start, stringLength str)' inclusive and
/* `substring start len str' returns the substring of `str' starting
at character position `min(start, stringLength str)' inclusive and
ending at `min(start + len, stringLength str)'. `start' must be
non-negative. */
static Expr prim_substring(EvalState & state, const ATermVector & args)