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-rwxr-xr-xscripts/nix-install-package.in6
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/nix-install-package.in b/scripts/nix-install-package.in
index 23f6efbcdb87..c109652d1fca 100755
--- a/scripts/nix-install-package.in
+++ b/scripts/nix-install-package.in
@@ -15,6 +15,7 @@ my $source;
 my $fromURL = 0;
 my @extraNixEnvArgs = ();
 my $interactive = 1;
+my $op = "--install";
 
 while (scalar @args) {
     my $arg = shift @args;
@@ -29,6 +30,9 @@ while (scalar @args) {
         die "$0: ‘--profile’ requires an argument\n" if !defined $profile;
         push @extraNixEnvArgs, "-p", $profile;
     }
+    elsif ($arg eq "--set") {
+        $op = "--set";
+    }
     elsif ($arg eq "--non-interactive") {
         $interactive = 0;
     }
@@ -129,7 +133,7 @@ if (defined $binaryCacheURL) {
 
 
 print "\nInstalling package...\n";
-system("$Nix::Config::binDir/nix-env", "--install", $outPath, "--force-name", $drvName, @extraNixEnvArgs) == 0
+system("$Nix::Config::binDir/nix-env", $op, $outPath, "--force-name", $drvName, @extraNixEnvArgs) == 0
     or barf "nix-env failed: $?";