improve xrepo clean #3679

xmake/modules/private/action/require/impl/register_packages.lua

@@ -20,6 +20,7 @@
 
 -- imports
 import("core.project.project")
+import("core.cache.localcache")
 
 -- register required package environments
 -- envs: bin path for *.dll, program ..
@@ -129,6 +130,8 @@ end
 
 -- register all required root packages to local cache
 function main(packages)
+
+    -- register to package cache for add_packages()
     for _, instance in ipairs(packages) do
         if instance:is_toplevel() then
             local required_packagename = instance:alias() or instance:name()
@@ -138,5 +141,19 @@ function main(packages)
             end
         end
     end
+
+    -- register references for `xrepo clean`
+    -- @see https://github.com/xmake-io/xmake/issues/3679
+    local references = {}
+    for _, instance in ipairs(packages) do
+        if not instance:is_system() and not instance:is_thirdparty() then
+            local installdir = instance:installdir({readonly = true})
+            if os.isdir(installdir) then
+                table.insert(references, installdir)
+            end
+        end
+    end
+    localcache.set("references", "packages", references)
+    localcache.save("references")
 end
 

xmake/modules/private/action/require/impl/remove_packages.lua

@@ -20,6 +20,7 @@
 
 -- imports
 import("core.base.option")
+import("core.base.hashset")
 import("core.package.package")
 import("core.cache.localcache")
 
@@ -44,6 +45,21 @@ function _get_package_configs_str(manifest_file)
     end
 end
 
+-- has reference from project?
+-- @see https://github.com/xmake-io/xmake/issues/3679
+function _has_reference_from_project(projectdir, packagedir)
+    local project_references_file = path.join(projectdir, ".xmake", os.host(), os.arch(), "cache", "references")
+    if os.isfile(project_references_file) then
+        local references = io.load(project_references_file)
+        if references and references.packages then
+            local packages = hashset.from(references.packages)
+            if packages:has(packagedir) then
+                return true
+            end
+        end
+    end
+end
+
 -- remove package directories
 function _remove_packagedirs(packagedir, opt)
 
@@ -58,7 +74,7 @@ function _remove_packagedirs(packagedir, opt)
             local references = os.isfile(references_file) and io.load(references_file) or nil
             if references then
                 for projectdir, refdate in pairs(references) do
-                    if os.isdir(projectdir) then
+                    if os.isdir(projectdir) and _has_reference_from_project(projectdir, hashdir) then
                         referenced = true
                         break
                     end