Only show path for installed packages, refs #7698

src/Composer/Command/ShowCommand.php

@@ -583,7 +583,9 @@ EOT
         $this->printLicenses($package);
         $io->write('<info>source</info>   : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getSourceType(), $package->getSourceUrl(), $package->getSourceReference()));
         $io->write('<info>dist</info>     : ' . sprintf('[%s] <comment>%s</comment> %s', $package->getDistType(), $package->getDistUrl(), $package->getDistReference()));
-        $io->write('<info>path</info>     : ' . sprintf('%s', realpath($this->getComposer()->getInstallationManager()->getInstallPath($package))));
+        if ($installedRepo->hasPackage($package)) {
+            $io->write('<info>path</info>     : ' . sprintf('%s', realpath($this->getComposer()->getInstallationManager()->getInstallPath($package))));
+        }
         $io->write('<info>names</info>    : ' . implode(', ', $package->getNames()));
 
         if ($latestPackage->isAbandoned()) {