Support (package.)use.stable.(mask|force) in EAPI 5 profiles

16 files changed, 441 insertions, 21 deletions

diff --git a/paludis/repositories/e/e_repository_TEST.cc b/paludis/repositories/e/e_repository_TEST.cc
index 2a69a60..3de7415 100644
--- a/paludis/repositories/e/e_repository_TEST.cc
+++ b/paludis/repositories/e/e_repository_TEST.cc
@@ -568,6 +568,207 @@ TEST_F(ERepositoryQueryUseTest, QueryUse)
     }
 }
 
+TEST_F(ERepositoryQueryUseTest, UseStableMaskForce)
+{
+    bool accept_unstable(false);
+    do
+    {
+        TestEnvironment env(accept_unstable);
+
+        std::shared_ptr<Map<std::string, std::string> > keys(std::make_shared<Map<std::string, std::string>>());
+        keys->insert("format", "e");
+        keys->insert("names_cache", "/var/empty");
+        keys->insert("location", stringify(FSPath::cwd() / "e_repository_TEST_dir" / "repo9a"));
+        keys->insert("profiles", stringify(FSPath::cwd() / "e_repository_TEST_dir" / "repo9a/profiles/eapi5/child"));
+        keys->insert("builddir", stringify(FSPath::cwd() / "e_repository_TEST_dir" / "build"));
+        std::shared_ptr<ERepository> repo(std::static_pointer_cast<ERepository>(ERepository::repository_factory_create(&env,
+                        std::bind(from_keys, keys, std::placeholders::_1))));
+        env.add_repository(1, repo);
+
+        for (int pass = 1 ; pass <= 2 ; ++pass)
+        {
+            const std::shared_ptr<const PackageID> stable1(*env[selection::RequireExactlyOne(generator::Matches(
+                            PackageDepSpec(parse_user_package_dep_spec("=cat/stable-1",
+                                    &env, { })), make_null_shared_ptr(), { }))]->begin());
+            const std::shared_ptr<const PackageID> stable1r1(*env[selection::RequireExactlyOne(generator::Matches(
+                            PackageDepSpec(parse_user_package_dep_spec("=cat/stable-1-r1",
+                                    &env, { })), make_null_shared_ptr(), { }))]->begin());
+            const std::shared_ptr<const PackageID> stable2(*env[selection::RequireExactlyOne(generator::Matches(
+                            PackageDepSpec(parse_user_package_dep_spec("=cat/stable-2",
+                                    &env, { })), make_null_shared_ptr(), { }))]->begin());
+            const std::shared_ptr<const PackageID> unstable1(*env[selection::RequireExactlyOne(generator::Matches(
+                            PackageDepSpec(parse_user_package_dep_spec("=cat/unstable-1",
+                                    &env, { })), make_null_shared_ptr(), { }))]->begin());
+            const std::shared_ptr<const PackageID> missing1(*env[selection::RequireExactlyOne(generator::Matches(
+                            PackageDepSpec(parse_user_package_dep_spec("=cat/missing-1",
+                                    &env, { })), make_null_shared_ptr(), { }))]->begin());
+
+            test_choice(stable1, "notstmask",     false, false, false);
+            test_choice(stable1, "notpkgstmask",  false, false, false);
+            test_choice(stable1, "notstforce",    false, false, false);
+            test_choice(stable1, "notpkgstforce", false, false, false);
+
+            test_choice(stable1, "stmask", false, false, ! accept_unstable);
+            test_choice(stable1, "pkgstmask", false, false, ! accept_unstable);
+            test_choice(stable1, "stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1, "pkgstforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+
+            test_choice(stable1, "mask-stunmask", false, false, accept_unstable);
+            test_choice(stable1, "unmask-stmask", false, false, ! accept_unstable);
+            test_choice(stable1, "stmask-pkgunmask", false, false, false);
+            test_choice(stable1, "stunmask-pkgmask", false, false, true);
+            test_choice(stable1, "pkgmask-pkgstunmask", false, false, accept_unstable);
+            test_choice(stable1, "pkgunmask-pkgstmask", false, false, ! accept_unstable);
+            test_choice(stable1, "pkgstmask-chunmask", false, false, false);
+            test_choice(stable1, "pkgstunmask-chmask", false, false, true);
+            test_choice(stable1, "pkgstmask-chpkgstunmask", false, false, false);
+            test_choice(stable1, "pkgstunmask-chpkgstmask", false, false, ! accept_unstable);
+
+            test_choice(stable1, "force-stunforce", accept_unstable, accept_unstable, accept_unstable);
+            test_choice(stable1, "unforce-stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1, "stforce-pkgunforce", false, false, false);
+            test_choice(stable1, "stunforce-pkgforce", true, true, true);
+            test_choice(stable1, "pkgforce-pkgstunforce", accept_unstable, accept_unstable, accept_unstable);
+            test_choice(stable1, "pkgunforce-pkgstforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1, "pkgstforce-chunforce", false, false, false);
+            test_choice(stable1, "pkgstunforce-chforce", true, true, true);
+            test_choice(stable1, "pkgstforce-chpkgstunforce", false, false, false);
+            test_choice(stable1, "pkgstunforce-chpkgstforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+
+            test_choice(stable1r1, "notstmask",     false, false, false);
+            test_choice(stable1r1, "notpkgstmask",  false, false, false);
+            test_choice(stable1r1, "notstforce",    false, false, false);
+            test_choice(stable1r1, "notpkgstforce", false, false, false);
+
+            test_choice(stable1r1, "stmask", false, false, ! accept_unstable);
+            test_choice(stable1r1, "pkgstmask", false, false, false);
+            test_choice(stable1r1, "stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1r1, "pkgstforce", false, false, false);
+
+            test_choice(stable1r1, "mask-stunmask", false, false, accept_unstable);
+            test_choice(stable1r1, "unmask-stmask", false, false, ! accept_unstable);
+            test_choice(stable1r1, "stmask-pkgunmask", false, false, ! accept_unstable);
+            test_choice(stable1r1, "stunmask-pkgmask", false, false, false);
+            test_choice(stable1r1, "pkgmask-pkgstunmask", false, false, false);
+            test_choice(stable1r1, "pkgunmask-pkgstmask", false, false, false);
+            test_choice(stable1r1, "pkgstmask-chunmask", false, false, false);
+            test_choice(stable1r1, "pkgstunmask-chmask", false, false, true);
+            test_choice(stable1r1, "pkgstmask-chpkgstunmask", false, false, ! accept_unstable);
+            test_choice(stable1r1, "pkgstunmask-chpkgstmask", false, false, false);
+
+            test_choice(stable1r1, "force-stunforce", accept_unstable, accept_unstable, accept_unstable);
+            test_choice(stable1r1, "unforce-stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1r1, "stforce-pkgunforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1r1, "stunforce-pkgforce", false, false, false);
+            test_choice(stable1r1, "pkgforce-pkgstunforce", false, false, false);
+            test_choice(stable1r1, "pkgunforce-pkgstforce", false, false, false);
+            test_choice(stable1r1, "pkgstforce-chunforce", false, false, false);
+            test_choice(stable1r1, "pkgstunforce-chforce", true, true, true);
+            test_choice(stable1r1, "pkgstforce-chpkgstunforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable1r1, "pkgstunforce-chpkgstforce", false, false, false);
+
+            test_choice(stable2, "notstmask",     false, false, false);
+            test_choice(stable2, "notpkgstmask",  false, false, false);
+            test_choice(stable2, "notstforce",    false, false, false);
+            test_choice(stable2, "notpkgstforce", false, false, false);
+
+            test_choice(stable2, "stmask", false, false, ! accept_unstable);
+            test_choice(stable2, "pkgstmask", false, false, false);
+            test_choice(stable2, "stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable2, "pkgstforce", false, false, false);
+
+            test_choice(stable2, "mask-stunmask", false, false, accept_unstable);
+            test_choice(stable2, "unmask-stmask", false, false, ! accept_unstable);
+            test_choice(stable2, "stmask-pkgunmask", false, false, ! accept_unstable);
+            test_choice(stable2, "stunmask-pkgmask", false, false, false);
+            test_choice(stable2, "pkgmask-pkgstunmask", false, false, false);
+            test_choice(stable2, "pkgunmask-pkgstmask", false, false, false);
+            test_choice(stable2, "pkgstmask-chunmask", false, false, false);
+            test_choice(stable2, "pkgstunmask-chmask", false, false, true);
+            test_choice(stable2, "pkgstmask-chpkgstunmask", false, false, false);
+            test_choice(stable2, "pkgstunmask-chpkgstmask", false, false, false);
+
+            test_choice(stable2, "force-stunforce", accept_unstable, accept_unstable, accept_unstable);
+            test_choice(stable2, "unforce-stforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable2, "stforce-pkgunforce", ! accept_unstable, ! accept_unstable, ! accept_unstable);
+            test_choice(stable2, "stunforce-pkgforce", false, false, false);
+            test_choice(stable2, "pkgforce-pkgstunforce", false, false, false);
+            test_choice(stable2, "pkgunforce-pkgstforce", false, false, false);
+            test_choice(stable2, "pkgstforce-chunforce", false, false, false);
+            test_choice(stable2, "pkgstunforce-chforce", true, true, true);
+            test_choice(stable2, "pkgstforce-chpkgstunforce", false, false, false);
+            test_choice(stable2, "pkgstunforce-chpkgstforce", false, false, false);
+
+            test_choice(unstable1, "notstmask",     false, false, false);
+            test_choice(unstable1, "notpkgstmask",  false, false, false);
+            test_choice(unstable1, "notstforce",    false, false, false);
+            test_choice(unstable1, "notpkgstforce", false, false, false);
+
+            test_choice(unstable1, "stmask", false, false, false);
+            test_choice(unstable1, "pkgstmask", false, false, false);
+            test_choice(unstable1, "stforce", false, false, false);
+            test_choice(unstable1, "pkgstforce", false, false, false);
+
+            test_choice(unstable1, "mask-stunmask", false, false, true);
+            test_choice(unstable1, "unmask-stmask", false, false, false);
+            test_choice(unstable1, "stmask-pkgunmask", false, false, false);
+            test_choice(unstable1, "stunmask-pkgmask", false, false, false);
+            test_choice(unstable1, "pkgmask-pkgstunmask", false, false, false);
+            test_choice(unstable1, "pkgunmask-pkgstmask", false, false, false);
+            test_choice(unstable1, "pkgstmask-chunmask", false, false, false);
+            test_choice(unstable1, "pkgstunmask-chmask", false, false, true);
+            test_choice(unstable1, "pkgstmask-chpkgstunmask", false, false, false);
+            test_choice(unstable1, "pkgstunmask-chpkgstmask", false, false, false);
+
+            test_choice(unstable1, "force-stunforce", true, true, true);
+            test_choice(unstable1, "unforce-stforce", false, false, false);
+            test_choice(unstable1, "stforce-pkgunforce", false, false, false);
+            test_choice(unstable1, "stunforce-pkgforce", false, false, false);
+            test_choice(unstable1, "pkgforce-pkgstunforce", false, false, false);
+            test_choice(unstable1, "pkgunforce-pkgstforce", false, false, false);
+            test_choice(unstable1, "pkgstforce-chunforce", false, false, false);
+            test_choice(unstable1, "pkgstunforce-chforce", true, true, true);
+            test_choice(unstable1, "pkgstforce-chpkgstunforce", false, false, false);
+            test_choice(unstable1, "pkgstunforce-chpkgstforce", false, false, false);
+
+            test_choice(missing1, "notstmask",     false, false, false);
+            test_choice(missing1, "notpkgstmask",  false, false, false);
+            test_choice(missing1, "notstforce",    false, false, false);
+            test_choice(missing1, "notpkgstforce", false, false, false);
+
+            test_choice(missing1, "stmask", false, false, false);
+            test_choice(missing1, "pkgstmask", false, false, false);
+            test_choice(missing1, "stforce", false, false, false);
+            test_choice(missing1, "pkgstforce", false, false, false);
+
+            test_choice(missing1, "mask-stunmask", false, false, true);
+            test_choice(missing1, "unmask-stmask", false, false, false);
+            test_choice(missing1, "stmask-pkgunmask", false, false, false);
+            test_choice(missing1, "stunmask-pkgmask", false, false, false);
+            test_choice(missing1, "pkgmask-pkgstunmask", false, false, false);
+            test_choice(missing1, "pkgunmask-pkgstmask", false, false, false);
+            test_choice(missing1, "pkgstmask-chunmask", false, false, false);
+            test_choice(missing1, "pkgstunmask-chmask", false, false, true);
+            test_choice(missing1, "pkgstmask-chpkgstunmask", false, false, false);
+            test_choice(missing1, "pkgstunmask-chpkgstmask", false, false, false);
+
+            test_choice(missing1, "force-stunforce", true, true, true);
+            test_choice(missing1, "unforce-stforce", false, false, false);
+            test_choice(missing1, "stforce-pkgunforce", false, false, false);
+            test_choice(missing1, "stunforce-pkgforce", false, false, false);
+            test_choice(missing1, "pkgforce-pkgstunforce", false, false, false);
+            test_choice(missing1, "pkgunforce-pkgstforce", false, false, false);
+            test_choice(missing1, "pkgstforce-chunforce", false, false, false);
+            test_choice(missing1, "pkgstunforce-chforce", true, true, true);
+            test_choice(missing1, "pkgstforce-chpkgstunforce", false, false, false);
+            test_choice(missing1, "pkgstunforce-chpkgstforce", false, false, false);
+        }
+
+        accept_unstable = ! accept_unstable;
+    }
+    while (accept_unstable);
+}
+
 TEST(ERepository, Masks)
 {
     TestEnvironment env;
diff --git a/paludis/repositories/e/e_repository_TEST_setup.sh b/paludis/repositories/e/e_repository_TEST_setup.sh
index 9b24d4a..6e25e59 100755
--- a/paludis/repositories/e/e_repository_TEST_setup.sh
+++ b/paludis/repositories/e/e_repository_TEST_setup.sh
@@ -191,8 +191,7 @@ END
 cd ..
 
 
-mkdir -p repo9/{eclass,distfiles,profiles/{profile,child},cat-one/pkg-one,cat-two/pkg-one} || exit 1
-mkdir -p repo9/{cat-one/pkg-one,cat-two/pkg-two} || exit 1
+mkdir -p repo9/{eclass,distfiles,profiles/{profile,child},cat-one/pkg-one,cat-two/pkg-two} || exit 1
 cd repo9 || exit 1
 echo "test-repo-9" > profiles/repo_name || exit 1
 cat <<END >profiles/categories || exit 1
@@ -252,6 +251,125 @@ SLOT="0"
 END
 cd ..
 
+mkdir -p repo9a/{eclass,distfiles,profiles/{profile,eapi5,eapi5/child},cat/stable,cat/unstable,cat/missing} || exit 1
+cd repo9a || exit 1
+echo "test-repo-9a" > profiles/repo_name || exit 1
+cat <<END >profiles/categories || exit 1
+cat
+END
+cat <<END > profiles/arch.list || exit 1
+test
+END
+cat <<END >profiles/profile/eapi || exit 1
+4
+END
+cat <<END >profiles/profile/make.defaults || exit 1
+ARCH=test
+END
+cat <<END >profiles/profile/use.stable.mask || exit 1
+notstmask
+END
+cat <<END >profiles/profile/package.use.stable.mask || exit 1
+=cat/stable-1 notpkgstmask
+END
+cat <<END >profiles/profile/use.stable.force || exit 1
+notstforce
+END
+cat <<END >profiles/profile/package.use.stable.force || exit 1
+=cat/stable-1 notpkgstforce
+END
+cat <<END >profiles/eapi5/eapi || exit 1
+5
+END
+cat <<END >profiles/eapi5/parent || exit 1
+../profile
+END
+cat <<END >profiles/eapi5/child/eapi || exit 1
+5
+END
+cat <<END >profiles/eapi5/child/parent || exit 1
+..
+END
+cat <<END >profiles/eapi5/use.mask || exit 1
+mask-stunmask
+-unmask-stmask
+END
+cat <<END >profiles/eapi5/use.stable.mask || exit 1
+stmask
+-mask-stunmask
+unmask-stmask
+stmask-pkgunmask
+-stunmask-pkgmask
+END
+cat <<END >profiles/eapi5/package.use.mask || exit 1
+=cat/stable-1 -stmask-pkgunmask stunmask-pkgmask
+=cat/stable-1 pkgmask-pkgstunmask -pkgunmask-pkgstmask
+END
+cat <<END >profiles/eapi5/package.use.stable.mask || exit 1
+=cat/stable-1 pkgstmask
+=cat/stable-1 -pkgmask-pkgstunmask pkgunmask-pkgstmask
+=cat/stable-1 pkgstmask-chunmask -pkgstunmask-chmask
+~cat/stable-1 pkgstmask-chpkgstunmask -pkgstunmask-chpkgstmask
+END
+cat <<END >profiles/eapi5/child/use.mask || exit 1
+-pkgstmask-chunmask
+pkgstunmask-chmask
+END
+cat <<END >profiles/eapi5/child/package.use.stable.mask || exit 1
+=cat/stable-1 -pkgstmask-chpkgstunmask pkgstunmask-chpkgstmask
+END
+cat <<END >profiles/eapi5/use.force || exit 1
+force-stunforce
+-unforce-stforce
+END
+cat <<END >profiles/eapi5/use.stable.force || exit 1
+stforce
+-force-stunforce
+unforce-stforce
+stforce-pkgunforce
+-stunforce-pkgforce
+END
+cat <<END >profiles/eapi5/package.use.force || exit 1
+=cat/stable-1 -stforce-pkgunforce stunforce-pkgforce
+=cat/stable-1 pkgforce-pkgstunforce -pkgunforce-pkgstforce
+END
+cat <<END >profiles/eapi5/package.use.stable.force || exit 1
+=cat/stable-1 pkgstforce
+=cat/stable-1 -pkgforce-pkgstunforce pkgunforce-pkgstforce
+=cat/stable-1 pkgstforce-chunforce -pkgstunforce-chforce
+~cat/stable-1 pkgstforce-chpkgstunforce -pkgstunforce-chpkgstforce
+END
+cat <<END >profiles/eapi5/child/use.force || exit 1
+-pkgstforce-chunforce
+pkgstunforce-chforce
+END
+cat <<END >profiles/eapi5/child/package.use.stable.force || exit 1
+=cat/stable-1 -pkgstforce-chpkgstunforce pkgstunforce-chpkgstforce
+END
+cat <<END > cat/stable/stable-1.ebuild || exit 1
+KEYWORDS="test"
+IUSE="
+notstmask notpkgstmask notstforce notpkgstforce
+stmask pkgstmask stforce pkgstforce
+mask-stunmask unmask-stmask
+stmask-pkgunmask stunmask-pkgmask
+pkgmask-pkgstunmask pkgunmask-pkgstmask
+pkgstmask-chunmask pkgstunmask-chmask
+pkgstmask-chpkgstunmask pkgstunmask-chpkgstmask
+force-stunforce unforce-stforce
+stforce-pkgunforce stunforce-pkgforce
+pkgforce-pkgstunforce pkgunforce-pkgstforce
+pkgstforce-chunforce pkgstunforce-chforce
+pkgstforce-chpkgstunforce pkgstunforce-chpkgstforce
+"
+SLOT="0"
+END
+cp cat/stable/stable-{1,1-r1}.ebuild || exit 1
+cp cat/stable/stable-{1,2}.ebuild || exit 1
+sed -e '/KEYWORDS/s/test/~test/' cat/stable/stable-1.ebuild > cat/unstable/unstable-1.ebuild || exit 1
+sed -e '/KEYWORDS/s/test/detest/' cat/stable/stable-1.ebuild > cat/missing/missing-1.ebuild || exit 1
+cd ..
+
 mkdir -p repo10/{eclass,distfiles,profiles/profile/subprofile,cat/masked,cat/not_masked,cat/was_masked} || exit 1
 cd repo10 || exit 1
 echo "test-repo-10" > profiles/repo_name || exit 1
diff --git a/paludis/repositories/e/eapi-fwd.hh b/paludis/repositories/e/eapi-fwd.hh
index 176afa8..91f21cd 100644
--- a/paludis/repositories/e/eapi-fwd.hh
+++ b/paludis/repositories/e/eapi-fwd.hh
@@ -40,6 +40,7 @@ namespace paludis
         class EAPILabels;
         class EAPIToolsOptions;
         class EAPIPipeCommands;
+        class EAPIProfileOptions;
         class EAPIChoicesOptions;
         class EAPIEbuildEnvironmentVariables;
         class SupportedEAPI;
diff --git a/paludis/repositories/e/eapi.cc b/paludis/repositories/e/eapi.cc
index 28262e9..0958743 100644
--- a/paludis/repositories/e/eapi.cc
+++ b/paludis/repositories/e/eapi.cc
@@ -229,6 +229,13 @@ namespace
                         ));
     }
 
+    std::shared_ptr<const EAPIProfileOptions> make_profile_options(const KeyValueConfigFile & k)
+    {
+        return std::make_shared<EAPIProfileOptions>(make_named_values<EAPIProfileOptions>(
+                        n::use_stable_mask_force() = destringify_key<bool>(k, "use_stable_mask_force")
+                        ));
+    }
+
     std::shared_ptr<const EAPIToolsOptions> make_tool_options(const KeyValueConfigFile & k)
     {
         return std::make_shared<EAPIToolsOptions>(make_named_values<EAPIToolsOptions>(
@@ -368,6 +375,7 @@ namespace
                         n::package_dep_spec_parse_options() = package_dep_spec_parse_options,
                         n::permitted_directories() = check_get(k, "permitted_directories"),
                         n::pipe_commands() = make_pipe_commands(k),
+                        n::profile_options() = make_profile_options(k),
                         n::tools_options() = make_tool_options(k),
                         n::uri_labels() = std::make_shared<const EAPILabels>(check_get(k, "uri_labels")),
                         n::userpriv_cannot_use_root() = destringify_key<bool>(k, "userpriv_cannot_use_root"),
diff --git a/paludis/repositories/e/eapi.hh b/paludis/repositories/e/eapi.hh
index aeae47f..8a87d32 100644
--- a/paludis/repositories/e/eapi.hh
+++ b/paludis/repositories/e/eapi.hh
@@ -177,6 +177,7 @@ namespace paludis
         typedef Name<struct name_permitted_directories> permitted_directories;
         typedef Name<struct name_pipe_commands> pipe_commands;
         typedef Name<struct name_profile_iuse_injection> profile_iuse_injection;
+        typedef Name<struct name_profile_options> profile_options;
         typedef Name<struct name_properties> properties;
         typedef Name<struct name_rdepend_defaults_to_depend> rdepend_defaults_to_depend;
         typedef Name<struct name_remote_ids> remote_ids;
@@ -213,6 +214,7 @@ namespace paludis
         typedef Name<struct name_use_expand> use_expand;
         typedef Name<struct name_use_expand_hidden> use_expand_hidden;
         typedef Name<struct name_use_expand_separator> use_expand_separator;
+        typedef Name<struct name_use_stable_mask_force> use_stable_mask_force;
         typedef Name<struct name_use_with_enable_empty_third_argument> use_with_enable_empty_third_argument;
         typedef Name<struct name_userpriv_cannot_use_root> userpriv_cannot_use_root;
         typedef Name<struct name_utility_path_suffixes> utility_path_suffixes;
@@ -309,6 +311,7 @@ namespace paludis
             NamedValue<n::package_dep_spec_parse_options, ELikePackageDepSpecOptions> package_dep_spec_parse_options;
             NamedValue<n::permitted_directories, std::string> permitted_directories;
             NamedValue<n::pipe_commands, std::shared_ptr<const EAPIPipeCommands> > pipe_commands;
+            NamedValue<n::profile_options, std::shared_ptr<const EAPIProfileOptions> > profile_options;
             NamedValue<n::tools_options, std::shared_ptr<const EAPIToolsOptions> > tools_options;
             NamedValue<n::uri_labels, std::shared_ptr<const EAPILabels> > uri_labels;
             NamedValue<n::userpriv_cannot_use_root, bool> userpriv_cannot_use_root;
@@ -461,6 +464,11 @@ namespace paludis
             NamedValue<n::ebuild_variable, std::string> ebuild_variable;
         };
 
+        struct EAPIProfileOptions
+        {
+            NamedValue<n::use_stable_mask_force, bool> use_stable_mask_force;
+        };
+
         struct EAPIToolsOptions
         {
             NamedValue<n::best_has_version_host_root, bool> best_has_version_host_root;
diff --git a/paludis/repositories/e/eapis/0.conf b/paludis/repositories/e/eapis/0.conf
index 92596f9..7394b8a 100644
--- a/paludis/repositories/e/eapis/0.conf
+++ b/paludis/repositories/e/eapis/0.conf
@@ -268,6 +268,8 @@ restrict_primaryuri = primaryuri
 
 pipe_commands_no_slot_or_repo = true
 
+use_stable_mask_force = false
+
 unpack_unrecognised_is_fatal = false
 unpack_fix_permissions = true
 doman_lang_filenames = false
diff --git a/paludis/repositories/e/eapis/5.conf b/paludis/repositories/e/eapis/5.conf
index f46b4c1..d0fc84a 100644
--- a/paludis/repositories/e/eapis/5.conf
+++ b/paludis/repositories/e/eapis/5.conf
@@ -13,6 +13,8 @@ dependency_spec_tree_parse_options = ${dependency_spec_tree_parse_options} allow
 
 load_modules = ${load_modules} usex
 
+use_stable_mask_force = true
+
 best_has_version_host_root = true
 econf_extra_options_help_dependent = ${econf_extra_options_help_dependent} disable-silent-rules::--disable-silent-rules
 
diff --git a/paludis/repositories/e/eapis/exheres-0.conf b/paludis/repositories/e/eapis/exheres-0.conf
index b633a96..3a5b606 100644
--- a/paludis/repositories/e/eapis/exheres-0.conf
+++ b/paludis/repositories/e/eapis/exheres-0.conf
@@ -341,6 +341,8 @@ restrict_primaryuri =
 
 pipe_commands_no_slot_or_repo = false
 
+use_stable_mask_force = false
+
 unpack_unrecognised_is_fatal = true
 unpack_fix_permissions = false
 doman_lang_filenames = true
diff --git a/paludis/repositories/e/eapis/paludis-1.conf b/paludis/repositories/e/eapis/paludis-1.conf
index 4f6b536..7182cba 100644
--- a/paludis/repositories/e/eapis/paludis-1.conf
+++ b/paludis/repositories/e/eapis/paludis-1.conf
@@ -266,6 +266,8 @@ restrict_primaryuri =
 
 pipe_commands_no_slot_or_repo = true
 
+use_stable_mask_force = false
+
 unpack_unrecognised_is_fatal = false
 unpack_fix_permissions = false
 doman_lang_filenames = true
diff --git a/paludis/repositories/e/ebuild_id.cc b/paludis/repositories/e/ebuild_id.cc
index 2985615..9a6916d 100644
--- a/paludis/repositories/e/ebuild_id.cc
+++ b/paludis/repositories/e/ebuild_id.cc
@@ -147,6 +147,7 @@ namespace paludis
         mutable bool has_non_xml_keys;
         mutable bool has_xml_keys;
         mutable bool has_masks;
+        mutable bool is_stable;
 
         const std::shared_ptr<const LiteralMetadataValueKey<FSPath> > fs_location;
 
@@ -201,6 +202,7 @@ namespace paludis
             has_non_xml_keys(false),
             has_xml_keys(false),
             has_masks(false),
+            is_stable(false),
             fs_location(make_fs_location(guessed_eapi, f))
         {
         }
@@ -604,6 +606,11 @@ namespace
         char c(*stringify(k).c_str());
         return (c != '~') && (c != '-');
     }
+
+    KeywordName make_unstable_keyword(const KeywordName & k)
+    {
+        return is_stable_keyword(k) ? KeywordName("~" + stringify(k)) : k;
+    }
 }
 
 void
@@ -636,15 +643,23 @@ EbuildID::need_masks_added() const
                         DistributionData::get_instance()->distribution_from_string(
                             _imp->environment->distribution())->concept_keyword(), keywords_key()->raw_name()));
         }
-        else if (keywords->end() == std::find_if(keywords->begin(), keywords->end(), &is_stable_keyword))
+        else
         {
-            add_overridden_mask(std::make_shared<OverriddenMask>(
-                            make_named_values<OverriddenMask>(
-                                n::mask() = create_e_unaccepted_mask('~',
-                                            DistributionData::get_instance()->distribution_from_string(
-                                                _imp->environment->distribution())->concept_keyword() + " (unstable accepted)", keywords_key()->raw_name()),
-                                n::override_reason() = mro_accepted_unstable
-                                )));
+            auto unstable_keywords(std::make_shared<KeywordNameSet>());
+            std::transform(keywords->begin(), keywords->end(), unstable_keywords->inserter(), &make_unstable_keyword);
+            if (! _imp->environment->accept_keywords(unstable_keywords, shared_from_this()))
+                _imp->is_stable = true;
+
+            if (keywords->end() == std::find_if(keywords->begin(), keywords->end(), &is_stable_keyword))
+            {
+                add_overridden_mask(std::make_shared<OverriddenMask>(
+                                make_named_values<OverriddenMask>(
+                                    n::mask() = create_e_unaccepted_mask('~',
+                                                DistributionData::get_instance()->distribution_from_string(
+                                                    _imp->environment->distribution())->concept_keyword() + " (unstable accepted)", keywords_key()->raw_name()),
+                                    n::override_reason() = mro_accepted_unstable
+                                    )));
+            }
         }
     }
 
@@ -1747,6 +1762,13 @@ EbuildID::might_be_binary() const
 }
 
 bool
+EbuildID::is_stable() const
+{
+    need_masks_added();
+    return _imp->is_stable;
+}
+
+bool
 EbuildID::is_installed() const
 {
     return false;
diff --git a/paludis/repositories/e/ebuild_id.hh b/paludis/repositories/e/ebuild_id.hh
index 97036a5..645c5f6 100644
--- a/paludis/repositories/e/ebuild_id.hh
+++ b/paludis/repositories/e/ebuild_id.hh
@@ -169,6 +169,7 @@ namespace paludis
                 virtual void purge_invalid_cache() const;
 
                 bool might_be_binary() const;
+                bool is_stable() const;
 
                 virtual void set_scm_revision(const std::string &) const;
 
diff --git a/paludis/repositories/e/exheres_profile.cc b/paludis/repositories/e/exheres_profile.cc
index 2526c88..67d23c0 100644
--- a/paludis/repositories/e/exheres_profile.cc
+++ b/paludis/repositories/e/exheres_profile.cc
@@ -222,7 +222,7 @@ ExheresProfile::profiles_with_parents() const
 
 bool
 ExheresProfile::use_masked(
-        const std::shared_ptr<const PackageID> & id,
+        const std::shared_ptr<const EbuildID> & id,
         const std::shared_ptr<const Choice> & choice,
         const UnprefixedChoiceName & value_unprefixed,
         const ChoiceNameWithPrefix &
@@ -235,7 +235,7 @@ ExheresProfile::use_masked(
 
 bool
 ExheresProfile::use_forced(
-        const std::shared_ptr<const PackageID> & id,
+        const std::shared_ptr<const EbuildID> & id,
         const std::shared_ptr<const Choice> & choice,
         const UnprefixedChoiceName & value_unprefixed,
         const ChoiceNameWithPrefix &
diff --git a/paludis/repositories/e/exheres_profile.hh b/paludis/repositories/e/exheres_profile.hh
index f2b0f7b..acf11c3 100644
--- a/paludis/repositories/e/exheres_profile.hh
+++ b/paludis/repositories/e/exheres_profile.hh
@@ -54,14 +54,14 @@ namespace paludis
                     PALUDIS_ATTRIBUTE((warn_unused_result));
 
                 virtual bool use_masked(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed
                         ) const PALUDIS_ATTRIBUTE((warn_unused_result));
 
                 virtual bool use_forced(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed
diff --git a/paludis/repositories/e/profile.hh b/paludis/repositories/e/profile.hh
index 8f2c60e..a58702b 100644
--- a/paludis/repositories/e/profile.hh
+++ b/paludis/repositories/e/profile.hh
@@ -32,7 +32,7 @@
 #include <paludis/util/wrapped_forward_iterator-fwd.hh>
 #include <paludis/util/map-fwd.hh>
 #include <paludis/util/singleton.hh>
-#include <paludis/repositories/e/e_repository_id.hh>
+#include <paludis/repositories/e/ebuild_id.hh>
 #include <paludis/repositories/e/mask_info.hh>
 #include <string>
 #include <functional>
@@ -54,14 +54,14 @@ namespace paludis
                     PALUDIS_ATTRIBUTE((warn_unused_result)) = 0;
 
                 virtual bool use_masked(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed
                         ) const PALUDIS_ATTRIBUTE((warn_unused_result)) = 0;
 
                 virtual bool use_forced(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed
diff --git a/paludis/repositories/e/traditional_profile.cc b/paludis/repositories/e/traditional_profile.cc
index 5814788..8d857ce 100644
--- a/paludis/repositories/e/traditional_profile.cc
+++ b/paludis/repositories/e/traditional_profile.cc
@@ -82,10 +82,14 @@ namespace
         std::string origin;
 
         FlagStatusMap use_mask;
+        FlagStatusMap use_stable_mask;
         FlagStatusMap use_force;
+        FlagStatusMap use_stable_force;
         PackageFlagStatusMapList package_use;
         PackageFlagStatusMapList package_use_mask;
+        PackageFlagStatusMapList package_use_stable_mask;
         PackageFlagStatusMapList package_use_force;
+        PackageFlagStatusMapList package_use_stable_force;
 
         StackedValues(const std::string & o) :
             origin(o)
@@ -225,6 +229,13 @@ namespace
         load_spec_use_file(*eapi, dir / "package.use", _imp->stacked_values_list.back().package_use);
         load_spec_use_file(*eapi, dir / "package.use.mask", _imp->stacked_values_list.back().package_use_mask);
         load_spec_use_file(*eapi, dir / "package.use.force", _imp->stacked_values_list.back().package_use_force);
+        if (eapi->supported()->profile_options()->use_stable_mask_force())
+        {
+            load_basic_use_file(dir / "use.stable.mask", _imp->stacked_values_list.back().use_stable_mask);
+            load_basic_use_file(dir / "use.stable.force", _imp->stacked_values_list.back().use_stable_force);
+            load_spec_use_file(*eapi, dir / "package.use.stable.mask", _imp->stacked_values_list.back().package_use_stable_mask);
+            load_spec_use_file(*eapi, dir / "package.use.stable.force", _imp->stacked_values_list.back().package_use_stable_force);
+        }
 
         _imp->packages_file.add_file(dir / "packages");
         _imp->package_mask_file.add_file(dir / "package.mask");
@@ -792,7 +803,7 @@ TraditionalProfile::profiles_with_parents() const
 
 bool
 TraditionalProfile::use_masked(
-        const std::shared_ptr<const PackageID> & id,
+        const std::shared_ptr<const EbuildID> & id,
         const std::shared_ptr<const Choice> & choice,
         const UnprefixedChoiceName & value_unprefixed,
         const ChoiceNameWithPrefix & value_prefixed
@@ -810,6 +821,13 @@ TraditionalProfile::use_masked(
         if (i->use_mask.end() != f)
             result = f->second;
 
+        if (id->is_stable())
+        {
+            FlagStatusMap::const_iterator fs(i->use_stable_mask.find(value_prefixed));
+            if (i->use_stable_mask.end() != fs)
+                result = fs->second;
+        }
+
         for (PackageFlagStatusMapList::const_iterator g(i->package_use_mask.begin()),
                 g_end(i->package_use_mask.end()) ; g != g_end ; ++g)
         {
@@ -820,6 +838,20 @@ TraditionalProfile::use_masked(
             if (g->second.end() != h)
                 result = h->second;
         }
+
+        if (id->is_stable())
+        {
+            for (PackageFlagStatusMapList::const_iterator gs(i->package_use_stable_mask.begin()),
+                     gs_end(i->package_use_stable_mask.end()) ; gs != gs_end ; ++gs)
+            {
+                if (! match_package(*_imp->env, *gs->first, id, make_null_shared_ptr(), { }))
+                    continue;
+
+                FlagStatusMap::const_iterator hs(gs->second.find(value_prefixed));
+                if (gs->second.end() != hs)
+                    result = hs->second;
+            }
+        }
     }
 
     return result;
@@ -827,7 +859,7 @@ TraditionalProfile::use_masked(
 
 bool
 TraditionalProfile::use_forced(
-        const std::shared_ptr<const PackageID> & id,
+        const std::shared_ptr<const EbuildID> & id,
         const std::shared_ptr<const Choice> & choice,
         const UnprefixedChoiceName & value_unprefixed,
         const ChoiceNameWithPrefix & value_prefixed
@@ -846,6 +878,13 @@ TraditionalProfile::use_forced(
         if (i->use_force.end() != f)
             result = f->second;
 
+        if (id->is_stable())
+        {
+            FlagStatusMap::const_iterator fs(i->use_stable_force.find(value_prefixed));
+            if (i->use_stable_force.end() != fs)
+                result = fs->second;
+        }
+
         for (PackageFlagStatusMapList::const_iterator g(i->package_use_force.begin()),
                 g_end(i->package_use_force.end()) ; g != g_end ; ++g)
         {
@@ -856,6 +895,20 @@ TraditionalProfile::use_forced(
             if (g->second.end() != h)
                 result = h->second;
         }
+
+        if (id->is_stable())
+        {
+            for (PackageFlagStatusMapList::const_iterator gs(i->package_use_stable_force.begin()),
+                     gs_end(i->package_use_stable_force.end()) ; gs != gs_end ; ++gs)
+            {
+                if (! match_package(*_imp->env, *gs->first, id, make_null_shared_ptr(), { }))
+                    continue;
+
+                FlagStatusMap::const_iterator hs(gs->second.find(value_prefixed));
+                if (gs->second.end() != hs)
+                    result = hs->second;
+            }
+        }
     }
 
     return result;
diff --git a/paludis/repositories/e/traditional_profile.hh b/paludis/repositories/e/traditional_profile.hh
index b3d2446..6005590 100644
--- a/paludis/repositories/e/traditional_profile.hh
+++ b/paludis/repositories/e/traditional_profile.hh
@@ -53,14 +53,14 @@ namespace paludis
                     PALUDIS_ATTRIBUTE((warn_unused_result));
 
                 virtual bool use_masked(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed
                         ) const PALUDIS_ATTRIBUTE((warn_unused_result));
 
                 virtual bool use_forced(
-                        const std::shared_ptr<const PackageID> &,
+                        const std::shared_ptr<const EbuildID> &,
                         const std::shared_ptr<const Choice> &,
                         const UnprefixedChoiceName & value_unprefixed,
                         const ChoiceNameWithPrefix & value_prefixed