xeus: new package (#9682)

* xeus: new package
cppzmq: add version 4.3.0
zeromq: make libsodium optional, on by default

* xeus: add patch so it builds, add new version
nlohmann-json: add more versions
cryptopp: add more versions

* xeus: flake8

* xeus: fix license

var/spack/repos/builtin/packages/cppzmq/package.py

@@ -14,7 +14,9 @@ class Cppzmq(CMakePackage):
     git      = "https://github.com/zeromq/cppzmq.git"
 
     version('develop', branch='master')
+    version('4.3.0', sha256='27d1f56406ba94ee779e639203218820975cf68174f92fbeae0f645df0fcada4')
     version('4.2.2', 'bd809b47296e77fe9f192bd9dafd5cc3')
 
     depends_on('cmake@3.0.0:', type='build')
-    depends_on('zeromq@4.2.2')
+    depends_on('zeromq@4.2.5', when='@4.3.0')
+    depends_on('zeromq@4.2.2', when='@4.2.2')

var/spack/repos/builtin/packages/cryptopp/package.py

@@ -17,6 +17,10 @@ class Cryptopp(MakefilePackage):
     url      = "http://www.cryptopp.com/cryptopp700.zip"
 
     version('7.0.0', '8f34884b572901b6ede89bd18f1c7ef6')
+    version('6.1.0', sha256='21289d2511101a9350c87c8eb1f4982d4a266e8037b19dab79a32cc13ea108c7')
+    version('6.0.0', sha256='64ac2db96b3f1b7a23675e2be95d16c96055edffa2d5e2de6245fdb6baa92dda')
+    version('5.6.5', sha256='a75ef486fe3128008bbb201efee3dcdcffbe791120952910883b26337ec32c34')
+    version('5.6.4', sha256='be430377b05c15971d5ccb6e44b4d95470f561024ed6d701fe3da3a188c84ad7')
     version('5.6.3', '3c5b70e2ec98b7a24988734446242d07')
     version('5.6.2', '7ed022585698df48e65ce9218f6c6a67')
     version('5.6.1', '96cbeba0907562b077e26bcffb483828')

var/spack/repos/builtin/packages/nlohmann-json/package.py

@@ -14,7 +14,9 @@ class NlohmannJson(CMakePackage):
     maintainers = ['ax3l']
 
     version('3.3.0', sha256='2fd1d207b4669a7843296c41d3b6ac5b23d00dec48dba507ba051d14564aa801')
-    version('3.1.2', '557651b017c36ad596ba3b577ba1b539')
+    version('3.2.0', sha256='2de558ff3b3b32eebfb51cf2ceb835a0fa5170e6b8712b02be9c2c07fcfe52a1')
+    version('3.1.2', sha256='e8fffa6cbdb3c15ecdff32eebf958b6c686bc188da8ad5c6489462d16f83ae54')
+    version('3.1.1', sha256='9f3549824af3ca7e9707a2503959886362801fb4926b869789d6929098a79e47')
 
     variant('single_header', default=True,
         description='Use amalgamated single-header')

var/spack/repos/builtin/packages/xeus/cmake_find_cryptopp_and_check_cxx_compatibility.patch

@@ -0,0 +1,52 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 810d5d1..d6ba3e9 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -49,7 +49,33 @@ message(STATUS "xeus binary version: v${XEUS_BINARY_VERSION}")
+ find_package(nlohmann_json 3.2.0 REQUIRED)
+ find_package(xtl 0.4 REQUIRED)
+ find_package(cppzmq 4.3.0 REQUIRED)
+-find_package(cryptopp REQUIRED)
++
++# cryptopp isn't built with cmake, find it manually
++find_path(cryptopp_ROOT_DIR
++  NAMES include/cryptopp/cryptlib.h
++  PATHS ENV cryptopp_ROOT)
++
++find_path(cryptopp_INCLUDE_DIR
++  NAMES cryptopp/cryptlib.h
++  HINTS ${cryptopp_ROOT_DIR}
++  PATH_SUFFIXES include)
++
++find_library(cryptopp_STATIC_LIB
++  NAMES libcryptopp.a
++  HINTS ${cryptopp_ROOT_DIR}
++  PATH_SUFFIXES lib)
++
++if (NOT cryptopp_INCLUDE_DIR OR NOT cryptopp_STATIC_LIB)
++  message(FATAL_ERROR "cannot find cryptopp, missing include dir or static lib")
++else()
++  message("Found cryptopp: ${cryptopp_ROOT_DIR}")
++endif()
++
++add_library(cryptopp-static STATIC IMPORTED)
++set_target_properties(cryptopp-static
++  PROPERTIES
++    IMPORTED_LOCATION ${cryptopp_STATIC_LIB}
++    INTERFACE_INCLUDE_DIRECTORIES ${cryptopp_INCLUDE_DIR})
+ 
+ # On Unix platforms, ZeroMQ is built with autotools and pkg-config is
+ # required to locate it.
+@@ -157,10 +183,11 @@ get_target_property(cryptopp_INCLUDE_DIR cryptopp-static INTERFACE_INCLUDE_DIREC
+ get_target_property(cryptopp_LIBRARY cryptopp-static LOCATION)
+ set(CMAKE_REQUIRED_LIBRARIES ${cryptopp_LIBRARY})
+ set(CMAKE_REQUIRED_INCLUDES ${cryptopp_INCLUDE_DIR})
++set(CMAKE_REQUIRED_FLAGS "--std=c++11")
+ check_cxx_source_compiles("
+ #include \"cryptopp/config.h\"
+ int main(){
+-  [[maybe_unused]] CryptoPP::byte b = CryptoPP::byte{0x36};
++  CryptoPP::byte b = CryptoPP::byte{0x36};
+ }" HAVE_CRYPTOPP_BYTE_T)
+ 
+ cmake_pop_check_state()

var/spack/repos/builtin/packages/xeus/package.py

@@ -0,0 +1,44 @@
+# Copyright 2013-2018 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Xeus(CMakePackage):
+    """QuantStack C++ implementation of Jupyter kernel protocol"""
+
+    homepage = "https://xeus.readthedocs.io/en/latest/"
+    url      = "https://github.com/QuantStack/xeus/archive/0.14.1.tar.gz"
+    git      = "https://github.com/QuantStack/xeus.git"
+
+    version('develop', branch='master')
+    version('0.15.0', sha256='bc99235b24d5757dc129f3ed531501fb0d0667913927ed39ee24281952649183')
+    version('0.14.1', sha256='a6815845d4522ec279f142d3b4e92ef52cd80847b512146a65f256a77e058cfe')
+
+    variant('examples', default=False, description="Build examples")
+
+    conflicts('%gcc@:4.8')
+    conflicts('%clang@:3.6')
+    conflicts('%intel@:17')
+
+    depends_on('zeromq@4.2.5:-libsodium')
+    depends_on('cppzmq@4.3.0:')
+    depends_on('cryptopp@7.0.0:')
+    depends_on('xtl@0.4.0:')
+    depends_on('nlohmann-json@3.2.0', when='@develop@0.15.0:')
+    depends_on('nlohmann-json@3.1.1', when='@0.14.1')
+    depends_on('libuuid')
+
+    # finds cryptopp not built with cmake, removes c++17 attribute
+    # in check_cxx_source_compiles
+    patch('cmake_find_cryptopp_and_check_cxx_compatibility.patch')
+
+    def cmake_args(self):
+        args = [
+            '-DBUILD_EXAMPLES:BOOL=%s' % (
+                'ON' if '+examples' in self.spec else 'OFF')
+        ]
+
+        return args

var/spack/repos/builtin/packages/zeromq/package.py

@@ -24,8 +24,10 @@ class Zeromq(AutotoolsPackage):
     version('4.0.6', 'd47dd09ed7ae6e7fd6f9a816d7f5fdf6')
     version('4.0.5', '73c39f5eb01b9d7eaf74a5d899f1d03d')
 
-    depends_on("libsodium")
-    depends_on("libsodium@:1.0.3", when='@:4.1.2')
+    variant("libsodium", default=True, description="Build with libsodium support")
+
+    depends_on("libsodium", when='+libsodium')
+    depends_on("libsodium@:1.0.3", when='+libsodium@:4.1.2')
 
     depends_on('autoconf', type='build', when='@develop')
     depends_on('automake', type='build', when='@develop')
@@ -40,7 +42,9 @@ def autoreconf(self, spec, prefix):
         bash('./autogen.sh')
 
     def configure_args(self):
-        config_args = ['--with-libsodium']
+        config_args = []
+        if '+libsodium' in self.spec:
+            config_args.append('--with-libsodium')
         if 'clang' in self.compiler.cc:
             config_args.append("CFLAGS=-Wno-gnu")
             config_args.append("CXXFLAGS=-Wno-gnu")