From e501be70c62f75023603f0916a88bb3ac53455a6 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Mon, 26 May 2003 14:03:24 +0000
Subject: [PATCH] * Moved `nix-populate' here.

svn path=/nixpkgs/trunk/; revision=61
---
 build/populate-linkdirs.pl | 58 ++++++++++++++++++++++++++++++++++++++
 descriptors/system.fix     |  2 +-
 2 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100755 build/populate-linkdirs.pl

diff --git a/build/populate-linkdirs.pl b/build/populate-linkdirs.pl
new file mode 100755
index 00000000000..d375caa7d3d
--- /dev/null
+++ b/build/populate-linkdirs.pl
@@ -0,0 +1,58 @@
+#! /usr/bin/perl -w
+
+use strict;
+use Cwd;
+
+my $selfdir = cwd;
+
+my @dirs = ("bin", "sbin", "lib", "include");
+
+# Create the subdirectories.
+mkdir $selfdir;
+foreach my $dir (@dirs) {
+    mkdir "$selfdir/$dir";
+}
+
+# For each activated package, create symlinks.
+
+sub createLinks {
+    my $srcdir = shift;
+    my $dstdir = shift;
+
+    my @srcfiles = glob("$srcdir/*");
+
+    foreach my $srcfile (@srcfiles) {
+	my $basename = $srcfile;
+	$basename =~ s/^.*\///g; # strip directory
+	my $dstfile = "$dstdir/$basename";
+	if (-d $srcfile) {
+	    # !!! hack for resolving name clashes
+	    if (!-e $dstfile) {
+		mkdir($dstfile) or 
+		    die "error creating directory $dstfile";
+	    }
+	    -d $dstfile or die "$dstfile is not a directory";
+	    createLinks($srcfile, $dstfile);
+	} elsif (-l $dstfile) {
+	    my $target = readlink($dstfile);
+	    die "collission between $srcfile and $target";
+	} else {
+	    print "linking $dstfile to $srcfile\n";
+	    symlink($srcfile, $dstfile) or
+		die "error creating link $dstfile";
+	}
+    }
+}
+
+foreach my $name (keys %ENV) {
+
+    next unless ($name =~ /^act.*$/);
+
+    my $pkgdir = $ENV{$name};
+
+    print "merging $pkgdir\n";
+
+    foreach my $dir (@dirs) {
+	createLinks("$pkgdir/$dir", "$selfdir/$dir");
+    }
+}
diff --git a/descriptors/system.fix b/descriptors/system.fix
index 7ca8c8797c4..000e2aaabb5 100644
--- a/descriptors/system.fix
+++ b/descriptors/system.fix
@@ -14,6 +14,6 @@ Descr(
   , Bind("actPan", Fix("./pan-0.14.0.fix"))
   , Bind("actSubversion", Fix("./subversion-0.21.0.fix"))
 
-  , Bind("build", Local("../../scripts/nix-populate"))
+  , Bind("build", Local("../build/populate-linkdirs.pl"))
   ]
 )