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nix-channel --update: allow updating only the specified channels

This commit is contained in:
Eelco Dolstra 2012-05-07 17:55:56 -04:00
parent 147f10157f
commit afa7b8a479
2 changed files with 14 additions and 10 deletions
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15
doc/manual/nix-channel.xml
View File

@ -22,7 +22,7 @@
<arg choice='plain'><option>--add</option> <replaceable>url</replaceable> <arg choice='opt'><replaceable>name</replaceable></arg></arg>
<arg choice='plain'><option>--remove</option> <replaceable>url</replaceable></arg>
<arg choice='plain'><option>--list</option></arg>
<arg choice='plain'><option>--update</option></arg>
<arg choice='plain'><option>--update</option> <arg rep='repeat'><replaceable>names</replaceable></arg></arg>
</group>
</cmdsynopsis>
</refsynopsisdiv>
@ -67,14 +67,15 @@ condition="manual">See also <xref linkend="sec-channels"
</varlistentry>
<varlistentry><term><option>--update</option></term>
<varlistentry><term><option>--update</option> [<replaceable>names</replaceable>…]</term>
<listitem><para>Downloads the Nix expressions of all subscribed
channels, makes them the default for <command>nix-env</command>
operations (by symlinking them from the directory
<filename>~/.nix-defexpr</filename>), and performs a
<command>nix-pull</command> on the manifests of all channels to
make pre-built binaries available.</para></listitem>
channels (or only those included in
<replaceable>names</replaceable> if specified), makes them the
default for <command>nix-env</command> operations (by symlinking
them from the directory <filename>~/.nix-defexpr</filename>), and
performs a <command>nix-pull</command> on the manifests of all
channels to make pre-built binaries available.</para></listitem>
</varlistentry>

9
scripts/nix-channel.in
View File

@ -76,6 +76,8 @@ sub removeChannel {
# Fetch Nix expressions and pull manifests from the subscribed
# channels.
sub update {
my @channelNames = @_;
readChannels;
# Create the manifests directory if it doesn't exist.
@ -87,6 +89,8 @@ sub update {
# Download each channel.
my $exprs = "";
foreach my $name (keys %channels) {
next if scalar @channelNames > 0 && ! grep { $_ eq $name } @{channelNames};
my $url = $channels{$name};
my $origUrl = "$url/MANIFEST";
@ -141,7 +145,7 @@ Usage:
nix-channel --add URL [CHANNEL-NAME]
nix-channel --remove CHANNEL-NAME
nix-channel --list
nix-channel --update
nix-channel --update [CHANNEL-NAME...]
EOF
exit 1;
}
@ -182,8 +186,7 @@ while (scalar @ARGV) {
}
elsif ($arg eq "--update") {
usageError if scalar @ARGV != 0;
update;
update(@ARGV);
last;
}