fix issue where linked packages would not load dylibs correctly

internal/shop.cm

@@ -563,18 +563,27 @@ Shop.open_package_dylib = function(pkg) {
       if (cfg.dependencies) {
         for (var alias in cfg.dependencies) {
           var dep_pkg = cfg.dependencies[alias]
+          try {
             Shop.open_package_dylib(dep_pkg)
+          } catch (dep_e) {
+            // Dependency dylib load failed, continue with others
+          }
         }
       }
     } catch (e) {
-      // Ignore errors reading cell.toml
+      // Error reading toml, continue
     }
   }
 
   var dl_path = get_lib_path(pkg)
   if (fd.is_file(dl_path)) {
     if (!open_dls[dl_path]) {
+      try {
         open_dls[dl_path] = os.dylib_open(dl_path)
+      } catch (e) {
+        dylib_visited[pkg] = false
+        throw e
+      }
     }
   }
 }
@@ -582,9 +591,8 @@ Shop.open_package_dylib = function(pkg) {
 // Resolve a C symbol by searching:
 // 1. If package_context is null, only check core internal symbols
 // 2. Otherwise: own package (internal then dylib) -> other packages (internal then dylib) -> core (internal only)
- // Core is never loaded as a dynamic library via dlopen
- function resolve_c_symbol(path, package_context)
- {
+// Core is never loaded as a dynamic library via dlopen
+function resolve_c_symbol(path, package_context) {
   var explicit = split_explicit_package_import(path)
   if (explicit) {
     if (is_internal_path(explicit.path) && package_context && explicit.package != package_context)

package.cm

@@ -3,6 +3,7 @@ var package = {}
 var fd = use('fd')
 var toml = use('toml')
 var os = use('os')
+var link = use('link')
 
 // Convert package name to a safe directory name
 // For absolute paths (local packages), replace / with _ 
@@ -22,6 +23,18 @@ function get_path(name)
   // If name is already an absolute path, use it directly
   if (name.startsWith('/'))
     return name
+
+  // Check if this package is linked - if so, use the link target directly
+  // This avoids symlink-related issues with file reading
+  var link_target = link.get_target(name)
+  if (link_target) {
+    // If link target is a local path, use it directly
+    if (link_target.startsWith('/'))
+      return link_target
+    // Otherwise it's another package name, resolve that
+    return os.global_shop_path + '/packages/' + link_target.replaceAll('@', '_')
+  }
+
   // Remote packages use nested directories, so don't transform slashes
   return os.global_shop_path + '/packages/' + name.replaceAll('@', '_')
 }
@@ -36,7 +49,12 @@ package.load_config = function(name)
   if (!content || content.trim().length == 0)
     return {}
 
-  return toml.decode(content)
+  var result = toml.decode(content)
+  if (!result) {
+    return {}
+  }
+
+  return result
 }
 
 package.save_config = function(name, config)
@@ -131,12 +149,19 @@ package.split_alias = function(name, path)
   var parts = path.split('/')
   var first_part = parts[0]
 
+  try {
     var config = package.load_config(name)
-  if (config.dependencies && config.dependencies[first_part]) {
-    var dep_locator = config.dependencies[first_part]
+    if (!config) return null
+
+    var deps = config.dependencies
+    if (deps && deps[first_part]) {
+      var dep_locator = deps[first_part]
       var remaining_path = parts.slice(1).join('/')
       return { package: dep_locator, path: remaining_path }
     }
+  } catch (e) {
+    // Config doesn't exist or couldn't be loaded
+  }
 
   return null
 }