From c724cbbc0de3e0ecf8df25521d58cb359016e4ee Mon Sep 17 00:00:00 2001
From: Tobias Pankrath <tobias@pankrath.net>
Date: Wed, 11 Mar 2020 14:27:06 +0100
Subject: [PATCH] fix #1556: dub --cache=local fetch + build

Building a package that was locally cached failed, because
the dependencies whould be fetched at the wrong destination.

For example if one tries to build the package 'optional':

$ dub --cache=local fetch optional
-> optional is now at ./.dub/package/optional
$ dub --cache=local build optional
-> fails because the dependency bolts was fetched to
./.dub/package/optional/.dub/package/bolts.

This is fixed by not overwriting the root path if dub builds
a package from the cache.
---
 source/dub/commandline.d | 1 -
 test/issue1556.sh        | 9 +++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100755 test/issue1556.sh

diff --git a/source/dub/commandline.d b/source/dub/commandline.d
index 077b9f6997..101d641786 100644
--- a/source/dub/commandline.d
+++ b/source/dub/commandline.d
@@ -714,7 +714,6 @@ abstract class PackageBuildCommand : Command {
 		auto pack = dub.packageManager.getFirstPackage(package_name);
 		enforce(pack, "Failed to find a package named '"~package_name~"' locally.");
 		logInfo("Building package %s in %s", pack.name, pack.path.toNativeString());
-		dub.rootPath = pack.path;
 		dub.loadPackage(pack);
 		return true;
 	}
diff --git a/test/issue1556.sh b/test/issue1556.sh
new file mode 100755
index 0000000000..4c0e414601
--- /dev/null
+++ b/test/issue1556.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+. $(dirname "${BASH_SOURCE[0]}")/common.sh
+
+${DUB} --cache=local remove optional || true
+${DUB} --cache=local remove bolts || true
+${DUB} --cache=local fetch optional
+${DUB} --cache=local build optional --compiler=${DC}
+