modules: Add module.import.noMounts config

Fixes #8708

docs/content/en/hugo-modules/configuration.md

@@ -101,6 +101,12 @@ ignoreImports {{< new-in "0.80.0" >}}
 disable
 : Set to `true` to disable the module while keeping any version info in the `go.*` files.
 
+noMounts {{< new-in "0.84.2" >}}
+:  Do not mount any folder in this import.
+
+noVendor
+:  Never vendor this import (only allowed in main project).
+
 {{< gomodules-info >}}
 
 

modules/collect.go

@@ -354,6 +354,11 @@ func (c *collector) addAndRecurse(owner *moduleAdapter, disabled bool) error {
 }
 
 func (c *collector) applyMounts(moduleImport Import, mod *moduleAdapter) error {
+	if moduleImport.NoMounts {
+		mod.mounts = nil
+		return nil
+	}
+
 	mounts := moduleImport.Mounts
 
 	modConfig := mod.Config()

modules/config.go

@@ -367,6 +367,7 @@ type Import struct {
 	pathProjectReplaced bool   // Set when Path is replaced in project config.
 	IgnoreConfig        bool   // Ignore any config in config.toml (will still folow imports).
 	IgnoreImports       bool   // Do not follow any configured imports.
+	NoMounts            bool   // Do not mount any folder in this import.
 	NoVendor            bool   // Never vendor this import (only allowed in main project).
 	Disable             bool   // Turn off this module.
 	Mounts              []Mount