Use _conf_data

_conf_data.py.in

@@ -0,0 +1,2 @@
+APP_DATADIR = "@app_datadir@"
+VERSION = "@version@"

fract4d/fractconfig.py

@@ -3,6 +3,11 @@
 import os
 import sys
 
+try:
+    from ._conf_data import APP_DATADIR
+except ImportError:
+    APP_DATADIR = ".."
+
 CONFIG_FILE = "~/.gnofract4d"
 
 
@@ -132,9 +137,7 @@ def ensure_contains(self, section, required_item):
     def get_data_path(subpath=""):
         # find where data files are present.
         # use share path one level up from module location
-        moduledir = os.path.dirname(sys.modules[__name__].__file__)
-        path = os.path.normpath(os.path.join(
-            moduledir, "../../../../share/gnofract4d", subpath))
+        path = os.path.join(APP_DATADIR, subpath)
         #print("Looking in %s" % path)
         return path
 

fract4d/options.py

@@ -4,8 +4,10 @@
 import sys
 from . import fractal as fract4d_fractal
 
-# version of Gnofract 4D
-VERSION = '4.3'
+try:
+    from ._conf_data import VERSION
+except ImportError:
+    VERSION = "dev"
 
 POSITION_ARGUMENTS = ("xcenter", "ycenter", "zcenter", "wcenter",
                       "xyangle", "xzangle", "xwangle", "yzangle", "ywangle", "zwangle",

meson.build

@@ -47,6 +47,16 @@ foreach p : packages
     )
 endforeach
 
+conf_data = configuration_data()
+conf_data.set('app_datadir', get_option('prefix') / project_datadir)
+conf_data.set('version', meson.project_version())
+conf_file = configure_file(input : '_conf_data.py.in',
+   output : '_conf_data.py',
+   configuration : conf_data,
+   install : true,
+   install_dir: py.get_install_dir() / 'fract4d',
+)
+
 # Application Data
 
 install_subdir('help',
@@ -114,6 +124,14 @@ custom_target('cp_gresource',
     build_by_default : true,
     depends: gresource,
 )
+custom_target('cp_confdata',
+    command : [cp,
+        conf_file,
+        meson.project_source_root() / 'fract4d/',
+    ],
+    output : 'none3',
+    build_by_default : true,
+)
 
 test('testing',
     find_program('pytest'),