Merge pull request easybuilders#3472 from Thyre/generic-bundle-includ…

…e-module-requirements

Enhance generic `Bundle` easyblock to transfer module requirements of components

easybuild/easyblocks/generic/bundle.py

@@ -31,6 +31,7 @@
 @author: Pieter De Baets (Ghent University)
 @author: Jens Timmerman (Ghent University)
 @author: Jasper Grimm (University of York)
+@author: Jan Andre Reuter (Juelich Supercomputing Centre)
 """
 import copy
 import os
@@ -71,8 +72,8 @@ def __init__(self, *args, **kwargs):
         self.altroot = None
         self.altversion = None
 
-        # list of EasyConfig instances for components
-        self.comp_cfgs = []
+        # list of EasyConfig instances and their EasyBlocks for components
+        self.comp_instances = []
 
         # list of EasyConfig instances of components for which to run sanity checks
         self.comp_cfgs_sanity_check = []
@@ -198,7 +199,7 @@ def __init__(self, *args, **kwargs):
             if comp_cfg['patches']:
                 self.cfg.update('patches', comp_cfg['patches'])
 
-            self.comp_cfgs.append(comp_cfg)
+            self.comp_instances.append((comp_cfg, comp_cfg.easyblock(comp_cfg)))
 
         self.cfg.update('checksums', checksums_patches)
 
@@ -217,7 +218,7 @@ def check_checksums(self):
         """
         checksum_issues = super(Bundle, self).check_checksums()
 
-        for comp in self.comp_cfgs:
+        for comp, _ in self.comp_instances:
             checksum_issues.extend(self.check_checksums_for(comp, sub="of component %s" % comp['name']))
 
         return checksum_issues
@@ -247,14 +248,12 @@ def build_step(self):
     def install_step(self):
         """Install components, if specified."""
         comp_cnt = len(self.cfg['components'])
-        for idx, cfg in enumerate(self.comp_cfgs):
+        for idx, (cfg, comp) in enumerate(self.comp_instances):
 
             print_msg("installing bundle component %s v%s (%d/%d)..." %
                       (cfg['name'], cfg['version'], idx + 1, comp_cnt))
             self.log.info("Installing component %s v%s using easyblock %s", cfg['name'], cfg['version'], cfg.easyblock)
 
-            comp = cfg.easyblock(cfg)
-
             # correct build/install dirs
             comp.builddir = self.builddir
             comp.install_subdir, comp.installdir = self.install_subdir, self.installdir
@@ -324,6 +323,38 @@ def install_step(self):
             # close log for this component
             comp.close_log()
 
+    def make_module_req_guess(self):
+        """
+        Set module requirements from all comppnents, e.g. $PATH, etc.
+        During the install step, we only set these requirements temporarily.
+        Later on when building the module, those paths are not considered.
+        Therefore, iterate through all the components again and gather
+        the requirements.
+
+        Do not remove duplicates or check for existance of folders,
+        as this is done in the generic EasyBlock while creating
+        the modulefile already.
+        """
+        # Start with the paths from the generic EasyBlock.
+        # If not added here, they might be missing entirely and fail sanity checks.
+        final_reqs = super(Bundle, self).make_module_req_guess()
+
+        for cfg, comp in self.comp_instances:
+            self.log.info("Gathering module paths for component %s v%s", cfg['name'], cfg['version'])
+            reqs = comp.make_module_req_guess()
+
+            try:
+                for key, value in sorted(reqs.items()):
+                    if isinstance(reqs, string_type):
+                        value = [value]
+                    final_reqs.setdefault(key, [])
+                    final_reqs[key] += value
+            except AttributeError:
+                raise EasyBuildError("Cannot process module requirements of bundle component %s v%s",
+                                     cfg['name'], cfg['version'])
+
+        return final_reqs
+
     def make_module_extra(self, *args, **kwargs):
         """Set extra stuff in module file, e.g. $EBROOT*, $EBVERSION*, etc."""
         if not self.altroot and not self.altversion: