dev-util/gnome-builder: Move package from gnome-extra/gnome-builder

gnome-builder is an IDE, so move it alongside many other IDEs wrt category.
gnome-extra isn't a dumping ground for all slightly gnome related apps, but
rather more of a legacy deprecated "stuff didn't fit somewhere else in the
past" thing.

Package-Manager: Portage-2.3.28, Repoman-2.3.9
RepoMan-Options: --force

7 files changed, 531 insertions, 0 deletions

diff --git a/dev-util/gnome-builder/Manifest b/dev-util/gnome-builder/Manifest
new file mode 100644
index 000000000000..555f60511b27
--- /dev/null
+++ b/dev-util/gnome-builder/Manifest
@@ -0,0 +1 @@
+DIST gnome-builder-3.24.2.tar.xz 4342908 BLAKE2B 5dca80d2e948041bc096fa9a2a5d39322c6fedb0560e3e4f3c60c7b0657c7c62e89387a63f7d050c3df90d8c129485bc5495039802548b22ae268d94c14a37ae SHA512 dec133ad3c5ef96a036598ebbe684667dc44f73d8643e700f1e776cf8eb860b99c1d333f1fed5bc896cb7bdcf607eb51fedb7bb1f5b0cc662e4b2703d74140bf
diff --git a/dev-util/gnome-builder/files/3.24.2-jedi-fixes-1.patch b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-1.patch
new file mode 100644
index 000000000000..399811bb0eac
--- /dev/null
+++ b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-1.patch
@@ -0,0 +1,28 @@
+From 294920f6b932992e9da8864ca96ae35fe2402406 Mon Sep 17 00:00:00 2001
+From: Christian Hergert <chergert@redhat.com>
+Date: Fri, 30 Jun 2017 21:19:41 -0700
+Subject: [PATCH] jedi: silence xml parser warning
+
+https://bugzilla.gnome.org/show_bug.cgi?id=784327
+---
+
+diff --git a/plugins/jedi/jedi_plugin.py b/plugins/jedi/jedi_plugin.py
+index 7be46f2..d257680 100644
+--- a/plugins/jedi/jedi_plugin.py
++++ b/plugins/jedi/jedi_plugin.py
+@@ -298,7 +298,11 @@ class DocumentationDB(object):
+                         cursor.execute('UPDATE girfiles SET last_modified=? WHERE file=?', (mtime, filename))
+                 parser = lxml.etree.XMLParser(recover=True)
+                 tree = lxml.etree.parse(filename, parser=parser)
+-                namespace = tree.find('core:namespace', namespaces=ns)
++                try:
++                    namespace = tree.find('core:namespace', namespaces=ns)
++                except:
++                    print("Failed to parse", filename)
++                    continue
+                 library_version = namespace.attrib['version']
+                 for node in namespace.findall('core:class', namespaces=ns):
+                     doc = node.find('core:doc', namespaces=ns)
+--
+libgit2 0.26.0
+
diff --git a/dev-util/gnome-builder/files/3.24.2-jedi-fixes-2.patch b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-2.patch
new file mode 100644
index 000000000000..de8397a57a00
--- /dev/null
+++ b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-2.patch
@@ -0,0 +1,25 @@
+From 1d7c6fa60faf9e81f2fa0f93898f8e1cc68da6d4 Mon Sep 17 00:00:00 2001
+From: Christian Hergert <chergert@redhat.com>
+Date: Thu, 6 Jul 2017 14:32:52 -0700
+Subject: [PATCH] jedi: ignore non-gir files
+
+The rnc file is now shipped here, so ignore that when going
+through the directory contents.
+---
+
+diff --git a/plugins/jedi/jedi_plugin.py b/plugins/jedi/jedi_plugin.py
+index d257680..25ade14 100644
+--- a/plugins/jedi/jedi_plugin.py
++++ b/plugins/jedi/jedi_plugin.py
+@@ -280,6 +280,8 @@ class DocumentationDB(object):
+         # I would use scandir for better performance, but it requires newer Python
+         for gir_path in GIR_PATH_LIST:
+             for gir_file in os.listdir(gir_path):
++                if not gir_file.endswith('.gir'):
++                    continue
+                 if gir_file in processed_gir_files:
+                     continue
+                 processed_gir_files[gir_file] = None
+--
+libgit2 0.26.0
+
diff --git a/dev-util/gnome-builder/files/3.24.2-jedi-fixes-3.patch b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-3.patch
new file mode 100644
index 000000000000..484341ad1155
--- /dev/null
+++ b/dev-util/gnome-builder/files/3.24.2-jedi-fixes-3.patch
@@ -0,0 +1,197 @@
+From 8bf74c787af082102958de7498a9b4f4248788cc Mon Sep 17 00:00:00 2001
+From: Elad Alfassa <elad@fedoraproject.org>
+Date: Wed, 9 Aug 2017 17:39:07 +0300
+Subject: [PATCH] jedi: adapt to jedi 0.10.0
+
+https://bugzilla.gnome.org/show_bug.cgi?id=778708
+---
+
+diff --git a/plugins/jedi/jedi_plugin.py b/plugins/jedi/jedi_plugin.py
+index 25ade14..8898b69 100644
+--- a/plugins/jedi/jedi_plugin.py
++++ b/plugins/jedi/jedi_plugin.py
+@@ -55,7 +55,6 @@ from gi.repository import GtkSource
+ from gi.repository import Ide
+ from gi.types import GObjectMeta
+ from gi.types import StructMeta
+-
+ _ = Ide.gettext
+ 
+ gi_importer = DynamicImporter('gi.repository')
+@@ -91,22 +90,31 @@ _ICONS = {
+ try:
+     import jedi
+     from jedi.evaluate.compiled import CompiledObject
++    from jedi.evaluate.compiled import get_special_object
+     from jedi.evaluate.compiled import _create_from_name
+-    from jedi.evaluate.compiled import builtin
++    from jedi.evaluate.context import Context
+     from jedi.evaluate.docstrings import _evaluate_for_statement_string
+     from jedi.evaluate.imports import Importer
+ 
+     class PatchedJediCompiledObject(CompiledObject):
+         "A modified version of Jedi CompiledObject to work with GObject Introspection modules"
++
++        def __init__(self, evaluator, obj, parent_context=None, faked_class=None):
++            # we have to override __init__ to change super(CompiledObject, self)
++            # to Context, in order to prevent an infinite recursion
++            Context.__init__(self, evaluator, parent_context)
++            self.obj = obj
++            self.tree_node = faked_class
++
+         def _cls(self):
+             if self.obj.__class__ == IntrospectionModule:
+                 return self
+             else:
+-                return super()._cls()
++                return super()._cls(self)
+ 
+         @property
+         def py__call__(self):
+-            def actual(evaluator, params):
++            def actual(params):
+                 # Parse the docstring to find the return type:
+                 ret_type = ''
+                 if '->' in self.obj.__doc__:
+@@ -115,18 +123,21 @@ try:
+                 if ret_type.startswith('iter:'):
+                     ret_type = ret_type[len('iter:'):]  # we don't care if it's an iterator
+ 
+-                if ret_type in __builtins__:
++                if hasattr(__builtins__, ret_type):
+                     # The function we're inspecting returns a builtin python type, that's easy
+-                    obj = _create_from_name(builtin, builtin, ret_type)
+-                    return evaluator.execute(obj, params)
++                    # (see test/test_evaluate/test_compiled.py in the jedi source code for usage)
++                    builtins = get_special_object(self.evaluator, 'BUILTINS')
++                    builtin_obj = builtins.py__getattribute__(ret_type)
++                    obj = _create_from_name(self.evaluator, builtins, builtin_obj, "")
++                    return self.evaluator.execute(obj, params)
+                 else:
+                     # The function we're inspecting returns a GObject type
+-                    parent = self.parent.obj.__name__
++                    parent = self.parent_context.obj.__name__
+                     if parent.startswith('gi.repository'):
+                         parent = parent[len('gi.repository.'):]
+                     else:
+                         # a module with overrides, such as Gtk, behaves differently
+-                        parent_module = self.parent.obj.__module__
++                        parent_module = self.parent_context.obj.__module__
+                         if parent_module.startswith('gi.overrides'):
+                             parent_module = parent_module[len('gi.overrides.'):]
+                             parent = '%s.%s' % (parent_module, parent)
+@@ -138,22 +149,28 @@ try:
+                         # A pygobject type in a different module
+                         return_type_parent = ret_type.split('.', 1)[0]
+                         ret_type = 'from gi.repository import %s\n%s' % (return_type_parent, ret_type)
+-                    result = _evaluate_for_statement_string(evaluator, ret_type, self.parent)
+-                    return result
++                    result = _evaluate_for_statement_string(self.parent_context, ret_type)
++                    return set(result)
+             if type(self.obj) == FunctionInfo:
+                 return actual
+             return super().py__call__
+ 
++    # we need to override CompiledBoundMethod without changing it much,
++    # just so it'll not get confused due to our overriden CompiledObject
++    class PatchedCompiledBoundMethod(PatchedJediCompiledObject):
++        def __init__(self, func):
++            super().__init__(func.evaluator, func.obj, func.parent_context, func.tree_node)
++
+     class PatchedJediImporter(Importer):
+         "A modified version of Jedi Importer to work with GObject Introspection modules"
+         def follow(self):
+             module_list = super().follow()
+-            if module_list == []:
++            if not module_list:
+                 import_path = '.'.join([str(i) for i in self.import_path])
+                 if import_path.startswith('gi.repository'):
+                     try:
+                         module = gi_importer.load_module(import_path)
+-                        module_list = [PatchedJediCompiledObject(module)]
++                        module_list = [PatchedJediCompiledObject(self._evaluator, module)]
+                     except ImportError:
+                         pass
+             return module_list
+@@ -169,9 +186,9 @@ try:
+                 return original_jedi_get_module('gi._gobject')
+ 
+     jedi.evaluate.compiled.fake.get_module = patched_jedi_get_module
+-
+-    jedi.evaluate.imports.Importer = PatchedJediImporter
+     jedi.evaluate.compiled.CompiledObject = PatchedJediCompiledObject
++    jedi.evaluate.instance.CompiledBoundMethod = PatchedCompiledBoundMethod
++    jedi.evaluate.imports.Importer = PatchedJediImporter
+     HAS_JEDI = True
+ except ImportError:
+     print("jedi not found, python auto-completion not possible.")
+@@ -331,7 +348,6 @@ def update_doc_db_on_startup():
+ 
+ update_doc_db_on_startup()
+ 
+-
+ class JediCompletionProvider(Ide.Object, GtkSource.CompletionProvider, Ide.CompletionProvider):
+     context = None
+     current_word = None
+@@ -600,6 +616,15 @@ class JediCompletionRequest:
+         script = jedi.Script(self.content, self.line + 1, self.column, self.filename)
+ 
+         db = DocumentationDB()
++
++        def get_gi_obj(info):
++            """ Get a GObject Introspection object from a jedi Completion, or None if the completion is not GObject Introspection related """
++            if (type(info._module) == PatchedJediCompiledObject and
++               info._module.obj.__class__ == IntrospectionModule):
++                return next(info._name.infer()).obj
++            else:
++                return None
++
+         for info in script.completions():
+             if self.cancelled:
+                 return
+@@ -608,10 +633,9 @@ class JediCompletionRequest:
+ 
+             # we have to use custom names here because .type and .params can't
+             # be overridden (they are properties)
+-            if type(info._definition) == PatchedJediCompiledObject and \
+-               type(info._definition.obj) == FunctionInfo:
++            obj = get_gi_obj(info)
++            if type(obj) == FunctionInfo:
+                     info.real_type = 'function'
+-                    obj = info._definition.obj
+                     params = [arg_info.get_name() for arg_info in obj.get_arguments()]
+             else:
+                 info.real_type = info.type
+@@ -626,8 +650,8 @@ class JediCompletionRequest:
+                             params.append(param.name)
+ 
+             doc = info.docstring()
+-            if hasattr(info._definition, 'obj'):
+-                obj = info._definition.obj
++            if obj is not None:
++                # get documentation for this GObject Introspection object
+                 symbol = None
+                 namespace = None
+ 
+@@ -640,17 +664,7 @@ class JediCompletionRequest:
+                     namespace = obj.get_namespace()
+ 
+                 if symbol is not None:
+-                    # we need to walk down the path to find the module so we can get the version
+-                    parent = info._definition.parent
+-                    found = False
+-                    while not found:
+-                        new_parent = parent.parent
+-                        if new_parent is None:
+-                            found = True
+-                        else:
+-                            parent = new_parent
+-                    version = parent.obj._version
+-                    result = db.query(symbol, version)
++                    result = db.query(symbol, info._module.obj._version)
+                     if result is not None:
+                         doc = result
+ 
+--
+libgit2 0.26.0
+
diff --git a/dev-util/gnome-builder/gnome-builder-3.24.2-r1.ebuild b/dev-util/gnome-builder/gnome-builder-3.24.2-r1.ebuild
new file mode 100644
index 000000000000..1daef3f26567
--- /dev/null
+++ b/dev-util/gnome-builder/gnome-builder-3.24.2-r1.ebuild
@@ -0,0 +1,133 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python3_{4,5,6} )
+VALA_MIN_API_VERSION="0.30"
+VALA_USE_DEPEND="vapigen"
+DISABLE_AUTOFORMATTING=1
+FORCE_PRINT_ELOG=1
+
+inherit gnome2 python-single-r1 vala virtualx readme.gentoo-r1
+
+DESCRIPTION="Builder attempts to be an IDE for writing software for GNOME"
+HOMEPAGE="https://wiki.gnome.org/Apps/Builder"
+
+# FIXME: Review licenses at some point
+LICENSE="GPL-3+ GPL-2+ LGPL-3+ LGPL-2+ MIT CC-BY-SA-3.0 CC0-1.0"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="clang +git sysprof vala webkit"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+# When bumping, pay attention to all the included plugins/*/configure.ac files and the requirements within.
+# Most have no extra requirements and default to enabled; we need to handle the ones with extra requirements, which tend to default to auto(magic).
+# Look at the last (fourth) argument given to AC_ARG_ENABLE to decide. We don't support any disabling of those that are default-enabled and have no extra deps beyond C/python/introspection.
+# FIXME: >=dev-util/devhelp-3.20.0 dependency is automagic for devhelp integration plugin
+# FIXME: vte could be optional via $(use_enable vte terminal-plugin) - but most/all people want this and have vte?
+# FIXME: flatpak-plugin needs flatpak.pc >=0.6.9, libgit2[threads] >=libgit2-glib-0.24.0[ssh] libsoup-2.4.pc
+# FIXME: --with-sanitizer configure option
+# FIXME: Enable rdtscp based high performance counter usage on suitable architectures for EGG_COUNTER?
+# Editorconfig needs pcre.h, with vte migrating away, might want it optional?
+# Python is always enabled - the core python plugin support checks are automagic and not worth crippling it by not supporting python plugins
+# Relatedly introspection is always required to not have broken python using plugins or have to enable/disable them based on it. This is a full IDE, not a place to be really minimal.
+# An introspection USE flag of a dep is required if any introspection based language plugin wants to use it. Last full check at 3.22.4
+RDEPEND="
+	>=x11-libs/gtk+-3.22.1:3[introspection]
+	>=dev-libs/glib-2.50.0:2[dbus]
+	>=x11-libs/gtksourceview-3.22.0:3.0[introspection]
+	>=dev-libs/gobject-introspection-1.48.0:=
+	>=dev-python/pygobject-3.22.0:3
+	>=dev-libs/libxml2-2.9.0
+	>=x11-libs/pango-1.38.0
+	>=dev-libs/libpeas-1.18.0[python,${PYTHON_USEDEP}]
+	>=dev-libs/json-glib-1.2.0
+	>=app-text/gspell-1.2.0
+	>=app-text/enchant-1.6.0
+	webkit? ( >=net-libs/webkit-gtk-2.12.0:4=[introspection] )
+	clang? ( sys-devel/clang:= )
+	git? (
+		dev-libs/libgit2[ssh,threads]
+		>=dev-libs/libgit2-glib-0.25.0[ssh] )
+	>=x11-libs/vte-0.46:2.91
+	sysprof? ( >=dev-util/sysprof-3.23.91[gtk] )
+	dev-libs/libpcre:3
+	${PYTHON_DEPS}
+	vala? ( $(vala_depend) )
+"
+# desktop-file-utils for desktop-file-validate check in configure for 3.22.4
+DEPEND="${RDEPEND}
+	dev-libs/appstream-glib
+	dev-util/desktop-file-utils
+	>=sys-devel/gettext-0.19.8
+	virtual/pkgconfig
+	!<sys-apps/sandbox-2.10-r3
+"
+
+# Tests fail if all plugins aren't enabled (webkit, clang, devhelp, perhaps more)
+RESTRICT="test"
+
+DOC_CONTENTS='gnome-builder can use various other dependencies on runtime to provide
+extra capabilities beyond these expressed via USE flags. Some of these
+that are currently available with packages include:
+
+* dev-util/ctags with exuberant-ctags selected via "eselect ctags" for
+  C, C++, Python, JavaScript, CSS, HTML and Ruby autocompletion, semantic
+  highlighting and symbol resolving support.
+* dev-python/jedi-0.10.x and dev-python/lxml for more accurate Python
+  autocompletion support.
+* dev-util/valgrind for integration with valgrind.
+* dev-util/meson for integration with the Meson build system.
+* dev-util/cargo for integration with the Rust Cargo build system.
+'
+# FIXME: Package gnome-code-assistance and mention here, or maybe USE flag and default enable because it's rather important
+# eslint for additional diagnostics in JavaScript files
+# jhbuild support
+# rust language server via rls
+# autotools stuff for autotools plugin; gtkmm/autoconf-archive for C++ template
+# mono/PHPize stuff
+
+PATCHES=( "${FILESDIR}"/${PV}-jedi-fixes-{1,2,3}.patch ) # jedi-0.10+ compatibility from 3.25.9x; remove 0.10 specific mention from DOC_CONTENTS once compat with 0.11+
+
+pkg_setup() {
+	python-single-r1_pkg_setup
+}
+
+src_prepare() {
+	use vala && vala_src_prepare
+	gnome2_src_prepare
+}
+
+src_configure() {
+	gnome2_src_configure \
+		--with-channel=distro \
+		--enable-editorconfig \
+		--enable-introspection \
+		$(use_enable vala vala-pack-plugin) \
+		$(use_enable webkit) \
+		$(use_enable webkit html-preview-plugin) \
+		$(use_enable clang clang-plugin) \
+		$(use_enable git git-plugin) \
+		$(use_enable sysprof sysprof-plugin) \
+		--disable-flatpak-plugin \
+		--enable-terminal-plugin \
+		--enable-gettext-plugin \
+		--disable-static
+}
+
+src_install() {
+	gnome2_src_install
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	gnome2_pkg_postinst
+	readme.gentoo_print_elog
+}
+
+src_test() {
+	# FIXME: this should be handled at eclass level
+	"${EROOT}${GLIB_COMPILE_SCHEMAS}" --allow-any-name "${S}/data/gsettings" || die
+
+	GSETTINGS_SCHEMA_DIR="${S}/data/gsettings" virtx emake check
+}
diff --git a/dev-util/gnome-builder/gnome-builder-3.24.2.ebuild b/dev-util/gnome-builder/gnome-builder-3.24.2.ebuild
new file mode 100644
index 000000000000..fc35c2c3eb4b
--- /dev/null
+++ b/dev-util/gnome-builder/gnome-builder-3.24.2.ebuild
@@ -0,0 +1,131 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python3_{4,5,6} )
+VALA_MIN_API_VERSION="0.30"
+VALA_USE_DEPEND="vapigen"
+DISABLE_AUTOFORMATTING=1
+FORCE_PRINT_ELOG=1
+
+inherit gnome2 python-single-r1 vala virtualx readme.gentoo-r1
+
+DESCRIPTION="Builder attempts to be an IDE for writing software for GNOME"
+HOMEPAGE="https://wiki.gnome.org/Apps/Builder"
+
+# FIXME: Review licenses at some point
+LICENSE="GPL-3+ GPL-2+ LGPL-3+ LGPL-2+ MIT CC-BY-SA-3.0 CC0-1.0"
+SLOT="0"
+KEYWORDS="amd64 x86"
+IUSE="clang +git sysprof vala webkit"
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+# When bumping, pay attention to all the included plugins/*/configure.ac files and the requirements within.
+# Most have no extra requirements and default to enabled; we need to handle the ones with extra requirements, which tend to default to auto(magic).
+# Look at the last (fourth) argument given to AC_ARG_ENABLE to decide. We don't support any disabling of those that are default-enabled and have no extra deps beyond C/python/introspection.
+# FIXME: >=dev-util/devhelp-3.20.0 dependency is automagic for devhelp integration plugin
+# FIXME: vte could be optional via $(use_enable vte terminal-plugin) - but most/all people want this and have vte?
+# FIXME: flatpak-plugin needs flatpak.pc >=0.6.9, libgit2[threads] >=libgit2-glib-0.24.0[ssh] libsoup-2.4.pc
+# FIXME: --with-sanitizer configure option
+# FIXME: Enable rdtscp based high performance counter usage on suitable architectures for EGG_COUNTER?
+# Editorconfig needs pcre.h, with vte migrating away, might want it optional?
+# Python is always enabled - the core python plugin support checks are automagic and not worth crippling it by not supporting python plugins
+# Relatedly introspection is always required to not have broken python using plugins or have to enable/disable them based on it. This is a full IDE, not a place to be really minimal.
+# An introspection USE flag of a dep is required if any introspection based language plugin wants to use it. Last full check at 3.22.4
+RDEPEND="
+	>=x11-libs/gtk+-3.22.1:3[introspection]
+	>=dev-libs/glib-2.50.0:2[dbus]
+	>=x11-libs/gtksourceview-3.22.0:3.0[introspection]
+	>=dev-libs/gobject-introspection-1.48.0:=
+	>=dev-python/pygobject-3.22.0:3
+	>=dev-libs/libxml2-2.9.0
+	>=x11-libs/pango-1.38.0
+	>=dev-libs/libpeas-1.18.0[python,${PYTHON_USEDEP}]
+	>=dev-libs/json-glib-1.2.0
+	>=app-text/gspell-1.2.0
+	>=app-text/enchant-1.6.0
+	webkit? ( >=net-libs/webkit-gtk-2.12.0:4=[introspection] )
+	clang? ( sys-devel/clang:= )
+	git? (
+		dev-libs/libgit2[ssh,threads]
+		>=dev-libs/libgit2-glib-0.25.0[ssh] )
+	>=x11-libs/vte-0.46:2.91
+	sysprof? ( >=dev-util/sysprof-3.23.91[gtk] )
+	dev-libs/libpcre:3
+	${PYTHON_DEPS}
+	vala? ( $(vala_depend) )
+"
+# desktop-file-utils for desktop-file-validate check in configure for 3.22.4
+DEPEND="${RDEPEND}
+	dev-libs/appstream-glib
+	dev-util/desktop-file-utils
+	>=sys-devel/gettext-0.19.8
+	virtual/pkgconfig
+	!<sys-apps/sandbox-2.10-r3
+"
+
+# Tests fail if all plugins aren't enabled (webkit, clang, devhelp, perhaps more)
+RESTRICT="test"
+
+DOC_CONTENTS='gnome-builder can use various other dependencies on runtime to provide
+extra capabilities beyond these expressed via USE flags. Some of these
+that are currently available with packages include:
+
+* dev-util/ctags with exuberant-ctags selected via "eselect ctags" for
+  C, C++, Python, JavaScript, CSS, HTML and Ruby autocompletion, semantic
+  highlighting and symbol resolving support.
+* dev-python/jedi and dev-python/lxml for more accurate Python
+  autocompletion support.
+* dev-util/valgrind for integration with valgrind.
+* dev-util/meson for integration with the Meson build system.
+* dev-util/cargo for integration with the Rust Cargo build system.
+'
+# FIXME: Package gnome-code-assistance and mention here, or maybe USE flag and default enable because it's rather important
+# eslint for additional diagnostics in JavaScript files
+# jhbuild support
+# rust language server via rls
+# autotools stuff for autotools plugin; gtkmm/autoconf-archive for C++ template
+# mono/PHPize stuff
+
+pkg_setup() {
+	python-single-r1_pkg_setup
+}
+
+src_prepare() {
+	use vala && vala_src_prepare
+	gnome2_src_prepare
+}
+
+src_configure() {
+	gnome2_src_configure \
+		--with-channel=distro \
+		--enable-editorconfig \
+		--enable-introspection \
+		$(use_enable vala vala-pack-plugin) \
+		$(use_enable webkit) \
+		$(use_enable webkit html-preview-plugin) \
+		$(use_enable clang clang-plugin) \
+		$(use_enable git git-plugin) \
+		$(use_enable sysprof sysprof-plugin) \
+		--disable-flatpak-plugin \
+		--enable-terminal-plugin \
+		--enable-gettext-plugin \
+		--disable-static
+}
+
+src_install() {
+	gnome2_src_install
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	gnome2_pkg_postinst
+	readme.gentoo_print_elog
+}
+
+src_test() {
+	# FIXME: this should be handled at eclass level
+	"${EROOT}${GLIB_COMPILE_SCHEMAS}" --allow-any-name "${S}/data/gsettings" || die
+
+	GSETTINGS_SCHEMA_DIR="${S}/data/gsettings" virtx emake check
+}
diff --git a/dev-util/gnome-builder/metadata.xml b/dev-util/gnome-builder/metadata.xml
new file mode 100644
index 000000000000..78c212429a5c
--- /dev/null
+++ b/dev-util/gnome-builder/metadata.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<maintainer type="project">
+	<email>gnome@gentoo.org</email>
+	<name>Gentoo GNOME Desktop</name>
+</maintainer>
+<use>
+	<flag name="clang">Provide integration with <pkg>sys-devel/clang</pkg> for best possible C/C++ autocompletion, semantic highlighting, symbol resolving, and diagnostics support</flag>
+	<flag name="git">Provide support for the Git version control system via <pkg>dev-libs/libgit2-glib</pkg>
+		(such as setup of Git for New Project, direct cloning for Open Project and changed lines indicators in the editor gutter)</flag>
+	<flag name="sysprof">Provide an integrated profiler via <pkg>dev-util/sysprof</pkg></flag>
+	<flag name="vala">Provide an autoindenter, autocompletion, diagnostics, and symbol resolver for Vala</flag>
+	<flag name="webkit">Enable <pkg>net-libs/webkit-gtk</pkg> using plugins support and the HTML/Markdown previewer plugin</flag>
+</use>
+</pkgmetadata>