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

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

9
scripts/nix-channel.in
View file

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