diff --git a/devel/Makefile b/devel/Makefile
index 8653412b8862..6d26e69368a4 100644
--- a/devel/Makefile
+++ b/devel/Makefile
@@ -1216,6 +1216,7 @@
     SUBDIR += libgpc
     SUBDIR += libgpkg
     SUBDIR += libgrading
+    SUBDIR += libgraphqlparser
     SUBDIR += libgsf
     SUBDIR += libgta
     SUBDIR += libgtop
diff --git a/devel/libgraphqlparser/Makefile b/devel/libgraphqlparser/Makefile
new file mode 100644
index 000000000000..2a91d5c58d9b
--- /dev/null
+++ b/devel/libgraphqlparser/Makefile
@@ -0,0 +1,21 @@
+# Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	libgraphqlparser
+PORTVERSION=	0.7.0
+DISTVERSIONPREFIX=	v
+CATEGORIES=	devel
+#MASTER_SITES=	
+
+MAINTAINER=	sunpoet@FreeBSD.org
+COMMENT=	GraphQL query parser
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USES=		bison cmake compiler:c++11-lang python:3.6+,build
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	graphql
+
+.include <bsd.port.mk>
diff --git a/devel/libgraphqlparser/distinfo b/devel/libgraphqlparser/distinfo
new file mode 100644
index 000000000000..0bc839c899a3
--- /dev/null
+++ b/devel/libgraphqlparser/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1588450778
+SHA256 (graphql-libgraphqlparser-v0.7.0_GH0.tar.gz) = 63dae018f970dc2bdce431cbafbfa0bd3e6b10bba078bb997a3c1a40894aa35c
+SIZE (graphql-libgraphqlparser-v0.7.0_GH0.tar.gz) = 79853
diff --git a/devel/libgraphqlparser/files/patch-CMakeLists.txt b/devel/libgraphqlparser/files/patch-CMakeLists.txt
new file mode 100644
index 000000000000..94c53d304b4c
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-CMakeLists.txt
@@ -0,0 +1,15 @@
+--- CMakeLists.txt.orig	2017-10-16 21:39:41 UTC
++++ CMakeLists.txt
+@@ -7,9 +7,9 @@ INCLUDE(version)
+ 
+ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+ 
+-FIND_PACKAGE(PythonInterp 2 REQUIRED)
+-IF (NOT PYTHON_VERSION_MAJOR EQUAL 2)
+-  MESSAGE(FATAL_ERROR "Python 2 is required.")
++FIND_PACKAGE(PythonInterp 3 REQUIRED)
++IF (NOT PYTHON_VERSION_MAJOR EQUAL 3)
++  MESSAGE(FATAL_ERROR "Python 3 is required.")
+ ENDIF()
+ 
+ FIND_PROGRAM(CTYPESGEN_FOUND ctypesgen.py)
diff --git a/devel/libgraphqlparser/files/patch-ast-c.py b/devel/libgraphqlparser/files/patch-ast-c.py
new file mode 100644
index 000000000000..1847132bb2ba
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-c.py
@@ -0,0 +1,53 @@
+--- ast/c.py.orig	2017-10-16 21:39:41 UTC
++++ ast/c.py
+@@ -62,7 +62,7 @@ class Printer(object):
+     self._current_type = None
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '''/** @generated */
++    print(C_LICENSE_COMMENT + '''/** @generated */
+ 
+ #pragma once
+ 
+@@ -70,33 +70,33 @@ class Printer(object):
+ extern "C" {
+ #endif
+ 
+-'''
++''')
+ 
+   def end_file(self):
+-    print '''
++    print('''
+ 
+ #ifdef __cplusplus
+ }
+ #endif
+-'''
++''')
+ 
+   def start_type(self, name):
+     # Forward declarations for AST nodes.
+     st_name = struct_name(name)
+-    print 'struct ' + st_name + ';'
++    print('struct ' + st_name + ';')
+     self._current_type = name
+ 
+   def field(self, type, name, nullable, plural):
+-    print field_prototype(self._current_type, type, name, nullable, plural) + ';'
++    print(field_prototype(self._current_type, type, name, nullable, plural) + ';')
+ 
+   def end_type(self, name):
+-    print
++    print()
+ 
+   def start_union(self, name):
+-    print 'struct ' + struct_name(name) + ';'
++    print('struct ' + struct_name(name) + ';')
+ 
+   def union_option(self, option):
+     pass
+ 
+   def end_union(self, name):
+-    print
++    print()
diff --git a/devel/libgraphqlparser/files/patch-ast-c_impl.py b/devel/libgraphqlparser/files/patch-ast-c_impl.py
new file mode 100644
index 000000000000..232b750581f9
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-c_impl.py
@@ -0,0 +1,49 @@
+--- ast/c_impl.py.orig	2017-10-16 21:39:41 UTC
++++ ast/c_impl.py
+@@ -17,13 +17,13 @@ class Printer(object):
+     self._current_type = None
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '''/** @generated */
++    print(C_LICENSE_COMMENT + '''/** @generated */
+ 
+ #include "GraphQLAst.h"
+ #include "../Ast.h"
+ 
+ using namespace facebook::graphql::ast;
+-'''
++''')
+ 
+   def end_file(self):
+     pass
+@@ -32,23 +32,23 @@ using namespace facebook::graphql::ast;
+     self._current_type = name
+ 
+   def field(self, type, name, nullable, plural):
+-    print field_prototype(self._current_type, type, name, nullable, plural) + ' {'
+-    print '  const auto *realNode = (const %s *)node;' % self._current_type
++    print(field_prototype(self._current_type, type, name, nullable, plural) + ' {')
++    print('  const auto *realNode = (const %s *)node;' % self._current_type)
+     title_name = title(name)
+     call_get = 'realNode->get%s()' % title_name
+     if plural:
+       if nullable:
+-        print '  return %s ? %s->size() : 0;' % (call_get, call_get)
++        print('  return %s ? %s->size() : 0;' % (call_get, call_get))
+       else:
+-        print '  return %s.size();' % call_get
++        print('  return %s.size();' % call_get)
+     else:
+       if type in ['string', 'OperationKind', 'boolean']:
+-        print '  return %s;' % call_get
++        print('  return %s;' % call_get)
+       else:
+         fmt = '  return (const struct %s *)%s%s;'
+-        print fmt % (struct_name(type), '' if nullable else '&', call_get)
++        print(fmt % (struct_name(type), '' if nullable else '&', call_get))
+ 
+-    print '}'
++    print('}')
+ 
+   def end_type(self, name):
+     pass
diff --git a/devel/libgraphqlparser/files/patch-ast-c_visitor_impl.py b/devel/libgraphqlparser/files/patch-ast-c_visitor_impl.py
new file mode 100644
index 000000000000..6308131dff12
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-c_visitor_impl.py
@@ -0,0 +1,22 @@
+--- ast/c_visitor_impl.py.orig	2017-10-16 21:39:41 UTC
++++ ast/c_visitor_impl.py
+@@ -16,8 +16,8 @@ class Printer(object):
+     self._types = []
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '/** @generated */'
+-    print '#define FOR_EACH_CONCRETE_TYPE(MACRO) \\'
++    print(C_LICENSE_COMMENT + '/** @generated */')
++    print('#define FOR_EACH_CONCRETE_TYPE(MACRO) \\')
+ 
+   def start_type(self, name):
+     self._types.append(name)
+@@ -29,7 +29,7 @@ class Printer(object):
+     pass
+ 
+   def end_file(self):
+-    print ' \\\n'.join('MACRO(%s, %s)' % (name, snake(name)) for name in self._types)
++    print(' \\\n'.join('MACRO(%s, %s)' % (name, snake(name)) for name in self._types))
+ 
+   def start_union(self, name):
+     pass
diff --git a/devel/libgraphqlparser/files/patch-ast-cxx.py b/devel/libgraphqlparser/files/patch-ast-cxx.py
new file mode 100644
index 000000000000..b6508d49e310
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-cxx.py
@@ -0,0 +1,173 @@
+--- ast/cxx.py.orig	2017-10-16 21:39:41 UTC
++++ ast/cxx.py
+@@ -5,7 +5,7 @@
+ # LICENSE file in the root directory of this source tree. An additional grant
+ # of patent rights can be found in the PATENTS file in the same directory.
+ 
+-import cStringIO as StringIO
++import io as StringIO
+ 
+ from casing import title
+ from license import C_LICENSE_COMMENT
+@@ -23,7 +23,7 @@ class Printer(object):
+     self._fields = []
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '''/** @generated */
++    print(C_LICENSE_COMMENT + '''/** @generated */
+ #pragma once
+ 
+ #include "AstNode.h"
+@@ -42,14 +42,14 @@ namespace ast {
+ struct CDeleter {
+   void operator()(const char *p) const { free((void *)p); }
+ };
+-'''
++''')
+ 
+   def end_file(self):
+-    print
+-    print self._deferredOutput.getvalue()
+-    print '}'
+-    print '}'
+-    print '}'
++    print()
++    print(self._deferredOutput.getvalue())
++    print('}')
++    print('}')
++    print('}')
+ 
+   def _base_class(self, type):
+     return self._bases.get(type, 'Node')
+@@ -58,8 +58,8 @@ struct CDeleter {
+     self._type_name = name
+     base = self._base_class(name)
+     # non-deferred!
+-    print 'class %s;' % name
+-    print >> self._deferredOutput, 'class %s : public %s {' % (name, base)
++    print('class %s;' % name)
++    print('class %s : public %s {' % (name, base), file=self._deferredOutput)
+     self._fields = []
+ 
+   def field(self, type, name, nullable, plural):
+@@ -69,18 +69,18 @@ struct CDeleter {
+ 
+   def end_type(self, name):
+     self._print_fields()
+-    print >> self._deferredOutput, ' public:'
++    print(' public:', file=self._deferredOutput)
+     self._print_constructor()
+-    print >> self._deferredOutput
++    print(file=self._deferredOutput)
+     self._print_destructor_prototype()
+-    print >> self._deferredOutput
++    print(file=self._deferredOutput)
+     self._print_noncopyable()
+-    print >> self._deferredOutput
++    print(file=self._deferredOutput)
+     self._print_getters()
+-    print >> self._deferredOutput, '  void accept(visitor::AstVisitor *visitor) const override;'
+-    print >> self._deferredOutput, '};'
+-    print >> self._deferredOutput
+-    print >> self._deferredOutput
++    print('  void accept(visitor::AstVisitor *visitor) const override;', file=self._deferredOutput)
++    print('};', file=self._deferredOutput)
++    print(file=self._deferredOutput)
++    print(file=self._deferredOutput)
+     self._type_name = None
+     self._fields = []
+ 
+@@ -97,7 +97,7 @@ struct CDeleter {
+       storage_type = self._storage_type(type)
+       if plural:
+         storage_type = 'std::unique_ptr<std::vector<%s>>' % storage_type
+-      print >> self._deferredOutput, '  %s %s_;' % (storage_type, name)
++      print('  %s %s_;' % (storage_type, name), file=self._deferredOutput)
+ 
+   def _ctor_singular_type(self, type):
+     if type == 'string':
+@@ -111,28 +111,28 @@ struct CDeleter {
+     return 'std::vector<%s> *' % self._storage_type(type)
+ 
+   def _print_constructor(self):
+-    print >> self._deferredOutput, '  explicit %s(' % self._type_name
+-    print >> self._deferredOutput, '      const yy::location &location%s' % (',' if self._fields else '')
++    print('  explicit %s(' % self._type_name, file=self._deferredOutput)
++    print('      const yy::location &location%s' % (',' if self._fields else ''), file=self._deferredOutput)
+     def ctor_arg(type, name, plural):
+       if plural:
+         ctor_type = self._ctor_plural_type(type)
+       else:
+         ctor_type = self._ctor_singular_type(type)
+       return '      %s %s' % (ctor_type, name)
+-    print >> self._deferredOutput, ',\n'.join(ctor_arg(type, name, plural)
+-                     for (type, name, nullable, plural) in self._fields)
+-    print >> self._deferredOutput, '  )'
++    print(',\n'.join(ctor_arg(type, name, plural)
++                     for (type, name, nullable, plural) in self._fields), file=self._deferredOutput)
++    print('  )', file=self._deferredOutput)
+     def ctor_init(type, name, plural):
+       # Strings are const char *, just pass.
+       # Vectors are passed by pointer and we take ownership.
+       # Node types are passed in by pointer and we take ownership.
+       value = name
+       return '    %s_(%s)' % (name, value)
+-    print >> self._deferredOutput, '  : %s(location)%s' % (self._base_class(self._type_name), ',' if self._fields else '')
+-    print >> self._deferredOutput, ',\n'.join(ctor_init(type, name, plural)
++    print('  : %s(location)%s' % (self._base_class(self._type_name), ',' if self._fields else ''), file=self._deferredOutput)
++    print(',\n'.join(ctor_init(type, name, plural)
+                      for (type, name, nullable, plural)
+-                     in self._fields)
+-    print >> self._deferredOutput, '  {}'
++                     in self._fields), file=self._deferredOutput)
++    print('  {}', file=self._deferredOutput)
+ 
+   def _getter_type(self, type, nullable, plural):
+     if plural and nullable:
+@@ -165,31 +165,31 @@ struct CDeleter {
+ 
+   def _print_getters(self):
+     for (type, name, nullable, plural) in self._fields:
+-      print >> self._deferredOutput, '  %s get%s() const' % (
++      print('  %s get%s() const' % (
+         self._getter_type(type, nullable, plural),
+-        title(name))
+-      print >> self._deferredOutput, '  { return %s; }' % (
+-        self._getter_value_to_return(name + '_', type, nullable, plural))
+-      print >> self._deferredOutput
++        title(name)), file=self._deferredOutput)
++      print('  { return %s; }' % (
++        self._getter_value_to_return(name + '_', type, nullable, plural)), file=self._deferredOutput)
++      print(file=self._deferredOutput)
+ 
+   def _print_destructor_prototype(self):
+-    print >> self._deferredOutput, '  ~%s() {}' % self._type_name
++    print('  ~%s() {}' % self._type_name, file=self._deferredOutput)
+ 
+   def _print_noncopyable(self):
+-    print >> self._deferredOutput, '  %s(const %s&) = delete;' % (
+-      self._type_name, self._type_name)
+-    print >> self._deferredOutput, '  %s& operator=(const %s&) = delete;' % (
+-      self._type_name, self._type_name)
++    print('  %s(const %s&) = delete;' % (
++      self._type_name, self._type_name), file=self._deferredOutput)
++    print('  %s& operator=(const %s&) = delete;' % (
++      self._type_name, self._type_name), file=self._deferredOutput)
+   
+   def start_union(self, name):
+     self._type_name = name
+     # non-deferred!
+-    print 'class %s;' % name
+-    print >> self._deferredOutput, 'class %s : public Node {' % name
+-    print >> self._deferredOutput, ' public:'
++    print('class %s;' % name)
++    print('class %s : public Node {' % name, file=self._deferredOutput)
++    print(' public:', file=self._deferredOutput)
+     self._print_constructor()
+-    print >> self._deferredOutput, '};'
+-    print >> self._deferredOutput
++    print('};', file=self._deferredOutput)
++    print(file=self._deferredOutput)
+ 
+   def union_option(self, type):
+     assert type not in self._bases, '%s cannot appear in more than one union!' % type
diff --git a/devel/libgraphqlparser/files/patch-ast-cxx_impl.py b/devel/libgraphqlparser/files/patch-ast-cxx_impl.py
new file mode 100644
index 000000000000..0fb74dc8b7e2
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-cxx_impl.py
@@ -0,0 +1,58 @@
+--- ast/cxx_impl.py.orig	2017-10-16 21:39:41 UTC
++++ ast/cxx_impl.py
+@@ -12,7 +12,7 @@ class Printer(object):
+     pass
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '''/** @generated */
++    print(C_LICENSE_COMMENT + '''/** @generated */
+ 
+ #include "Ast.h"
+ #include "AstVisitor.h"
+@@ -20,17 +20,17 @@ class Printer(object):
+ namespace facebook {
+ namespace graphql {
+ namespace ast {
+-'''
++''')
+ 
+   def end_file(self):
+-    print '}'
+-    print '}'
+-    print '}'
++    print('}')
++    print('}')
++    print('}')
+ 
+   def start_type(self, name):
+-    print '''void %s::accept(visitor::AstVisitor *visitor) const {
++    print('''void %s::accept(visitor::AstVisitor *visitor) const {
+   if (visitor->visit%s(*this)) {
+-''' % (name, name)
++''' % (name, name))
+ 
+   def field(self, type, name, nullable, plural):
+     if type in ['OperationKind', 'string', 'boolean']:
+@@ -40,18 +40,18 @@ namespace ast {
+       accept = '{ for (const auto &x : *%s_) { x->accept(visitor); } }' % name
+       if nullable:
+         accept = 'if (%s_) %s' % (name, accept)
+-      print '    ' + accept
++      print('    ' + accept)
+     else:
+       accept = '%s_->accept(visitor);' % name
+       if nullable:
+         accept = 'if (%s_) { %s }' % (name, accept)
+-      print '    ' + accept
++      print('    ' + accept)
+ 
+   def end_type(self, name):
+-    print '''  }
++    print('''  }
+   visitor->endVisit%s(*this);
+ }
+-''' % name
++''' % name)
+ 
+   def start_union(self, name):
+     pass
diff --git a/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_header.py b/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_header.py
new file mode 100644
index 000000000000..285ea4cfff2b
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_header.py
@@ -0,0 +1,24 @@
+--- ast/cxx_json_visitor_header.py.orig	2017-10-16 21:39:41 UTC
++++ ast/cxx_json_visitor_header.py
+@@ -13,7 +13,7 @@ class Printer(object):
+     self._anyFieldIsANode = False
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '/** @generated */'
++    print(C_LICENSE_COMMENT + '/** @generated */')
+ 
+   def end_file(self):
+     pass
+@@ -24,9 +24,9 @@ class Printer(object):
+   def end_type(self, name):
+     titleName = title(name)
+     if self._anyFieldIsANode:
+-      print 'bool visit%s(const %s &node) override;' % (titleName, titleName)
+-    print 'void endVisit%s(const %s &node) override;' % (titleName, titleName)
+-    print
++      print('bool visit%s(const %s &node) override;' % (titleName, titleName))
++    print('void endVisit%s(const %s &node) override;' % (titleName, titleName))
++    print()
+ 
+   def field(self, type, name, nullable, plural):
+     if (not self._anyFieldIsANode and
diff --git a/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_impl.py b/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_impl.py
new file mode 100644
index 000000000000..3498533aed8c
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-cxx_json_visitor_impl.py
@@ -0,0 +1,64 @@
+--- ast/cxx_json_visitor_impl.py.orig	2017-10-16 21:39:41 UTC
++++ ast/cxx_json_visitor_impl.py
+@@ -13,7 +13,7 @@ class Printer(object):
+     self._fields = []
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '/** @generated */'
++    print(C_LICENSE_COMMENT + '/** @generated */')
+ 
+   def end_file(self):
+     pass
+@@ -31,13 +31,13 @@ class Printer(object):
+     anyFieldIsANode = any(type not in ('string, boolean')
+                           for (type, _, _ ,_) in self._fields)
+     if anyFieldIsANode:
+-      print '''bool JsonVisitor::visit%s(const %s &node) {
++      print('''bool JsonVisitor::visit%s(const %s &node) {
+   visitNode();
+   return true;
+ }
+-''' % (titleName, titleName)
+-    print '''void JsonVisitor::endVisit%(tn)s(const %(tn)s &node) {
+-  NodeFieldPrinter fields(*this, "%(tn)s", node);''' % {'tn': titleName}
++''' % (titleName, titleName))
++    print('''void JsonVisitor::endVisit%(tn)s(const %(tn)s &node) {
++  NodeFieldPrinter fields(*this, "%(tn)s", node);''' % {'tn': titleName})
+ 
+     for (type, fieldName, nullable, plural) in self._fields:
+       funcName = None
+@@ -49,7 +49,7 @@ class Printer(object):
+         funcName = 'printSingularBooleanField'
+       elif not nullable and not plural:
+         # Special case: singular object fields don't need the value passed.
+-        print '  fields.printSingularObjectField("%s");' % fieldName
++        print('  fields.printSingularObjectField("%s");' % fieldName)
+         continue
+       else:
+         nullable_str = 'Nullable' if nullable else ''
+@@ -57,19 +57,19 @@ class Printer(object):
+         funcName = 'print%s%sField' % (nullable_str, plural_str)
+ 
+       assert funcName is not None
+-      print '  fields.%s("%s", node.get%s());' % (
+-        funcName, fieldName, title(fieldName))
++      print('  fields.%s("%s", node.get%s());' % (
++        funcName, fieldName, title(fieldName)))
+ 
+     if anyFieldIsANode:
+-      print '''
++      print('''
+   endVisitNode(fields.finishPrinting());
+ }
+-'''
++''')
+     else:
+-      print '''
++      print('''
+   printed_.back().emplace_back(fields.finishPrinting());
+ }
+-'''
++''')
+ 
+   def start_union(self, name):
+     pass
diff --git a/devel/libgraphqlparser/files/patch-ast-cxx_visitor.py b/devel/libgraphqlparser/files/patch-ast-cxx_visitor.py
new file mode 100644
index 000000000000..7c644a255b98
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-cxx_visitor.py
@@ -0,0 +1,52 @@
+--- ast/cxx_visitor.py.orig	2017-10-16 21:39:41 UTC
++++ ast/cxx_visitor.py
+@@ -13,7 +13,7 @@ class Printer(object):
+     pass
+ 
+   def start_file(self):
+-    print C_LICENSE_COMMENT + '''/** @generated */
++    print(C_LICENSE_COMMENT + '''/** @generated */
+ 
+ #pragma once
+ 
+@@ -27,28 +27,28 @@ namespace visitor {
+ class AstVisitor {
+ public:
+   virtual ~AstVisitor() {}
+-'''
++''')
+ 
+   def end_file(self):
+-    print '};' # end AstVisitor
+-    print
+-    print '}'
+-    print '}'
+-    print '}'
+-    print '}'
++    print('};') # end AstVisitor
++    print()
++    print('}')
++    print('}')
++    print('}')
++    print('}')
+ 
+   def start_type(self, name):
+     titleName = title(name)
+     camelName = camel(titleName)
+-    print '  virtual bool visit%s(const %s &%s) { return true; }' % (
++    print('  virtual bool visit%s(const %s &%s) { return true; }' % (
+       titleName,
+       titleName,
+-      camelName)
+-    print '  virtual void endVisit%s(const %s &%s) { }' % (
++      camelName))
++    print('  virtual void endVisit%s(const %s &%s) { }' % (
+       titleName,
+       titleName,
+-      camelName)
+-    print
++      camelName))
++    print()
+ 
+   def end_type(self, name):
+     pass
diff --git a/devel/libgraphqlparser/files/patch-ast-js.py b/devel/libgraphqlparser/files/patch-ast-js.py
new file mode 100644
index 000000000000..7d97c4d122e7
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-ast-js.py
@@ -0,0 +1,59 @@
+--- ast/js.py.orig	2017-10-16 21:39:41 UTC
++++ ast/js.py
+@@ -11,7 +11,7 @@ class Printer(object):
+     pass
+ 
+   def start_file(self):
+-    print '''/* @flow */
++    print('''/* @flow */
+ /* @generated */
+ /* jshint ignore:start */
+ 
+@@ -30,21 +30,21 @@ type Node = {
+   end?: ?number;
+ };
+ 
+-type OperationKind = 'query' | 'mutation' | 'subscription';'''
++type OperationKind = 'query' | 'mutation' | 'subscription';''')
+ 
+   def end_file(self):
+     pass
+ 
+   def start_type(self, name):
+-    print
+-    print 'type %s = Node & {' % name
++    print()
++    print('type %s = Node & {' % name)
+     kind = name
+     if kind == 'GenericType':
+       kind = 'Type'
+-    print '  kind: \'%s\';' % kind
++    print('  kind: \'%s\';' % kind)
+ 
+   def end_type(self, name):
+-    print '}'
++    print('}')
+ 
+   def _js_type(self, type, plural):
+     if plural:
+@@ -54,16 +54,16 @@ type OperationKind = 'query' | 'mutation' | 'subscript
+   def field(self, type, name, nullable, plural):
+     nullable_char = '?' if nullable else ''
+     js_type = self._js_type(type, plural)
+-    print '  %(name)s%(nullable_char)s: %(nullable_char)s%(js_type)s;' % locals()
++    print('  %(name)s%(nullable_char)s: %(nullable_char)s%(js_type)s;' % locals())
+ 
+   def start_union(self, name):
+-    print ('type %s = ' % name),
++    print(('type %s = ' % name), end=' ')
+     self._current_options = []
+ 
+   def union_option(self, type):
+     self._current_options.append(type)
+ 
+   def end_union(self, name):
+-    print '\n  | '.join(self._current_options)
+-    print
++    print('\n  | '.join(self._current_options))
++    print()
+     self._current_options = None
diff --git a/devel/libgraphqlparser/files/patch-parser.ypp b/devel/libgraphqlparser/files/patch-parser.ypp
new file mode 100644
index 000000000000..ad8224f75d67
--- /dev/null
+++ b/devel/libgraphqlparser/files/patch-parser.ypp
@@ -0,0 +1,17 @@
+--- parser.ypp.orig	2017-10-16 21:39:41 UTC
++++ parser.ypp
+@@ -7,12 +7,12 @@
+  * of patent rights can be found in the PATENTS file in the same directory.
+  */
+ 
+-%require "3"
++%require "3.0"
+ 
+ %skeleton "lalr1.cc"
+ 
+ %defines
+-%define parser_class_name {GraphQLParserImpl}
++%define api.parser.class {GraphQLParserImpl}
+ 
+ %define api.token.prefix {TOK_}
+ 
diff --git a/devel/libgraphqlparser/pkg-descr b/devel/libgraphqlparser/pkg-descr
new file mode 100644
index 000000000000..5e6a256ac521
--- /dev/null
+++ b/devel/libgraphqlparser/pkg-descr
@@ -0,0 +1,7 @@
+libgraphqlparser is a parser for GraphQL, a query language for describing data
+requirements on complex application data models, implemented in C++11. It can be
+used on its own in C++ code (or in C code via the pure C API defined in the c
+subdirectory), or you can use it as the basis for an extension module for your
+favorite programming language instead of writing your own parser from scratch.
+
+WWW: https://github.com/graphql/libgraphqlparser
diff --git a/devel/libgraphqlparser/pkg-plist b/devel/libgraphqlparser/pkg-plist
new file mode 100644
index 000000000000..b2fe68c60403
--- /dev/null
+++ b/devel/libgraphqlparser/pkg-plist
@@ -0,0 +1,18 @@
+include/graphqlparser/Ast.h
+include/graphqlparser/AstNode.h
+include/graphqlparser/AstVisitor.h
+include/graphqlparser/GraphQLParser.h
+include/graphqlparser/JsonVisitor.h
+include/graphqlparser/c/GraphQLAst.h
+include/graphqlparser/c/GraphQLAstForEachConcreteType.h
+include/graphqlparser/c/GraphQLAstNode.h
+include/graphqlparser/c/GraphQLAstToJSON.h
+include/graphqlparser/c/GraphQLAstVisitor.h
+include/graphqlparser/c/GraphQLParser.h
+include/graphqlparser/lexer.h
+include/graphqlparser/location.hh
+include/graphqlparser/parser.tab.hpp
+include/graphqlparser/position.hh
+include/graphqlparser/stack.hh
+include/graphqlparser/syntaxdefs.h
+lib/libgraphqlparser.so