njet: add v2.0.0 (#21809)

var/spack/repos/builtin/packages/njet/njet-2.0.0.patch

@@ -0,0 +1,17 @@
+--- blha/njet_olp.cpp.orig	2016-06-09 15:09:37.024953173 +0200
++++ blha/njet_olp.cpp	2016-06-09 15:09:41.783999034 +0200
+@@ -1076,12 +1076,12 @@
+   string line;
+   int linenum = 0;
+ 
+-  while (is_good && (is_good = getline(*input, line))) {
++  while (is_good && (is_good = getline(*input, line).good())) {
+     linenum++;
+     if (line.find(SIGNPREF) == 0) {
+       is_njet = true;
+       if (stringstream(line.substr(SIGNPREF.length())) >> signval) {
+-        is_good = getline(*input, line);
++        is_good = getline(*input, line).good();
+         linenum++;
+         body.push_back(line);
+         continue;

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

@@ -16,9 +16,12 @@ class Njet(AutotoolsPackage):
     tags = ['hep']
 
     version('2.1.1', sha256='3858ad37e84f3652711aa033819a6566352ecff04a1cb0189d6590af75b7bb56')
+    version('2.0.0', sha256='a1f5c171b8aff3553d9dde24d3ced5479bdaeec67f4c90c70a846ee3449b40ea')
 
     depends_on('qd')
 
+    patch('njet-2.0.0.patch', when='@2.0.0', level=0)
+
     def configure_args(self):
         args = ['--with-qd=' + self.spec['qd'].prefix,
                 "FFLAGS=-ffixed-line-length-none -std=legacy"]