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* Better error messages.

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This commit is contained in:
Eelco Dolstra 2004-11-04 20:20:39 +00:00
parent cb7ccb528b
commit feb3ceaee0
1 changed files with 4 additions and 4 deletions
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8
scripts/nix-channel.in
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@ -17,7 +17,7 @@ my @channels;
# Reads the list of channels from the file $channelsList;
sub readChannels {
return if (!-f $channelsList);
open CHANNELS, "<$channelsList" or die "cannot open `$channelsList'";
open CHANNELS, "<$channelsList" or die "cannot open `$channelsList': $!";
while (<CHANNELS>) {
chomp;
push @channels, $_;
@ -28,7 +28,7 @@ sub readChannels {
# Writes the list of channels to the file $channelsList;
sub writeChannels {
open CHANNELS, ">$channelsList" or die "cannot open `$channelsList'";
open CHANNELS, ">$channelsList" or die "cannot open `$channelsList': $!";
foreach my $url (@channels) {
print CHANNELS "$url\n";
}
@ -94,7 +94,7 @@ sub update {
my $rootFile = "$rootsDir/$userName.gcroot";
my $tmpRootFile = "$rootsDir/$userName-tmp.gcroot";
open ROOT, ">$tmpRootFile" or die "cannot create `$tmpRootFile'";
open ROOT, ">$tmpRootFile" or die "cannot create `$tmpRootFile': $!";
print ROOT "$storeExpr";
close ROOT;
@ -107,7 +107,7 @@ sub update {
system "@bindir@/nix-env --import '$outPath'";
die "cannot pull set default Nix expression to `$outPath'" if ($? != 0);
rename $tmpRootFile, $rootFile or die "cannot rename `$tmpRootFile' to `$rootFile'";
rename $tmpRootFile, $rootFile or die "cannot rename `$tmpRootFile' to `$rootFile': $!";
}