From da2ed282fd1cffda8a5ef7242b2aa562182b5e4f Mon Sep 17 00:00:00 2001
From: Guillaume de Rouville <guillaume@dagger.io>
Date: Wed, 24 Jun 2026 11:40:50 -0700
Subject: [PATCH] Resolve SDK-managed module paths from workspace root

SDK-managed module entries store their module path relative to the workspace root. The helper APIs were passing that path directly to moduleSource, where a relative path is interpreted from the current working directory.

That breaks generate flows from nested workspace directories such as .dagger or .dagger/modules: .dagger/modules/myapp is resolved as .dagger/.dagger/modules/myapp, and generate fails while computing changeset paths.

Prefix SDK-managed paths with / before calling the sdk-sdk polyfill. The polyfill already treats /path as a workspace-root-relative module source, which matches the meaning of Mod.path. This updates generateAll and direct mod generate.

Signed-off-by: Guillaume de Rouville <guillaume@dagger.io>
---
 mod.dang        | 2 +-
 python-sdk.dang | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mod.dang b/mod.dang
index 3df12f9..6d64737 100644
--- a/mod.dang
+++ b/mod.dang
@@ -39,7 +39,7 @@ type Mod {
     if (skipGenerate) {
       polyfill.workspace(ws).fork.changes
     } else {
-      polyfill.workspace(ws).moduleSource(path).generate.changes
+      polyfill.workspace(ws).moduleSource("/" + path).generate.changes
     }
   }
 }
diff --git a/python-sdk.dang b/python-sdk.dang
index f5dc7a5..50fc27a 100644
--- a/python-sdk.dang
+++ b/python-sdk.dang
@@ -216,7 +216,7 @@ type PythonSdk {
       .map { m => Mod(path: m.path, ws: ws, skipGenerateFilename: skipGenerateFilename) }
       .filter { mod => mod.skipGenerate == false }
       .reduce(pws.fork) { fork, mod =>
-        fork.merge(pws.moduleSource(mod.path).generate)
+        fork.merge(pws.moduleSource("/" + mod.path).generate)
       }
       .changes
   }