+ Provide dia, a program for drawing structured diagrams.

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

@@ -0,0 +1,67 @@
+from spack import *
+
+class Dia(Package):
+    """Dia is a program for drawing structured diagrams."""
+    homepage  = 'https://wiki.gnome.org/Apps/Dia'
+    url       = 'https://ftp.gnome.org/pub/gnome/sources/dia/0.97/dia-0.97.3.tar.xz'
+
+    version('0.97.3',    '0e744a0f6a6c4cb6a089e4d955392c3c')
+
+    #variant('ncurses', default=True, description='Enables the build of the ncurses gui')
+    #variant('openssl', default=True, description="Enables CMake's OpenSSL features")
+    #variant('qt', default=False, description='Enables the build of cmake-gui')
+    #variant('doc', default=False, description='Enables the generation of html and man page documentation')
+
+    depends_on('gtkplus@2.6.0:')
+    # depends_on('openssl', when='+openssl')
+    #depends_on('qt', when='+qt')
+    #depends_on('python@2.7.11:', when='+doc')
+    depends_on('cairo')
+    #depends_on('libart') # optional dependency, not yet supported by spack.
+    depends_on('libpng')
+    depends_on('libxslt')
+    depends_on('python')
+    depends_on('swig')
+    # depends_on('py-gtk') # optional dependency, not yet supported by spack.
+
+    def url_for_version(self, version):
+        """Handle Dia's version-based custom URLs."""
+        return 'https://ftp.gnome.org/pub/gnome/source/dia/%s/dia-%s.tar.xz' % (version.up_to(2), version)
+
+    # def validate(self, spec):
+    #     """
+    #     Checks if incompatible versions of qt were specified
+
+    #     :param spec: spec of the package
+    #     :raises RuntimeError: in case of inconsistencies
+    #     """
+
+    #     if '+qt' in spec and spec.satisfies('^qt@5.4.0'):
+    #         msg = 'qt-5.4.0 has broken CMake modules.'
+    #         raise RuntimeError(msg)
+
+    def install(self, spec, prefix):
+        # Consistency check
+        # self.validate(spec)
+
+        # configure, build, install:
+        options = ['--prefix=%s' % prefix,
+                   '--with-cairo',
+                   '--with-xslt-prefix=%s' % spec['libxslt'].prefix,
+                   '--with-python',
+                   '--with-swig']
+
+        # if '+qt' in spec:
+        #     options.append('--qt-gui')
+
+        # if '+doc' in spec:
+        #     options.append('--sphinx-html')
+        #     options.append('--sphinx-man')
+
+        # if '+openssl' in spec:
+        #     options.append('--')
+        #     options.append('-DCMAKE_USE_OPENSSL=ON')
+
+        configure(*options)
+        make()
+        make('install')