Index: branches/apertium-tagger/experiments/run_experiment.py
===================================================================
--- branches/apertium-tagger/experiments/run_experiment.py	(revision 72050)
+++ branches/apertium-tagger/experiments/run_experiment.py	(revision 72052)
@@ -16,7 +16,7 @@
 import asyncio
 from experiments import (experiment_groups, has_needs_tsx, run_experiment,
                          spec_to_str, str_to_spec)
-from shell_utils import cd, check_run
+from shell_utils import MissingLanguageDataException, check_run, mk_built_lab
 from shell_wrappers import (cg_conv_clean, cg_proc, copy_blanks, extract_src,
                             fix_dix, split_n_r, strip_blanks,
                             strip_cg_comments, strip_unknown_sent)
@@ -215,11 +215,6 @@
 }
 
 
-class MissingLanguageDataException(Exception):
-    def __init__(self, fn):
-        self.fn = fn
-
-
 class LanguageTaggerLab:
     def __init__(self, lang, lang_root, texts, folds,
                  sent_seg=False, use_cg_src=False,
@@ -387,15 +382,9 @@
             lang, lang_root, texts, args.folds,
             sent_seg=args.sent_seg, use_cg_src=args.use_cg_src,
             reuse=args.reuse, reuse_dic=args.reuse_dic)
-    try:
-        lab = mk_lab()
-    except MissingLanguageDataException as e:
-        print("Missing {}... Trying to build it for you.".format(e.fn))
-        with cd(lang_root):
-            check_run(['./autogen.sh'])
-            check_run(['make'])
-        lab = mk_lab()
 
+    lab = mk_built_lab(mk_lab, lang_root)
+
     lang_accuracies = {}
 
     def run_spec(spec):
Index: branches/apertium-tagger/experiments/grid_search.py
===================================================================
--- branches/apertium-tagger/experiments/grid_search.py	(revision 72050)
+++ branches/apertium-tagger/experiments/grid_search.py	(revision 72052)
@@ -4,7 +4,7 @@
 from copy import deepcopy
 from os import mkdir
 from os.path import join as pjoin
-from os.path import isdir, splitext
+from os.path import isdir
 
 import lxml.etree
 
@@ -11,6 +11,7 @@
 from experiments import percep_experiment, str_to_spec
 from run_experiment import (DEFAULT_TEXTS, WORK_DIR, LanguageTaggerLab,
                             add_common_args)
+from shell_utils import mk_built_lab
 
 
 class GridSearchLab(LanguageTaggerLab):
@@ -50,11 +51,14 @@
     spec_str = args.tagger
     spec = str_to_spec(spec_str)
 
-    lab = LanguageTaggerLab(
+    def mk_lab():
+        return LanguageTaggerLab(
         args.language, lang_root, texts, args.folds,
         sent_seg=args.sent_seg, use_cg_src=args.use_cg_src,
         reuse=args.reuse, reuse_dic=args.reuse_dic)
 
+    lab = mk_built_lab(mk_lab, lang_root)
+
     if not lab.can_run_experiment(spec):
         raise Exception("mtx needs a tsx")
 
Index: branches/apertium-tagger/experiments/shell_utils.py
===================================================================
--- branches/apertium-tagger/experiments/shell_utils.py	(revision 72050)
+++ branches/apertium-tagger/experiments/shell_utils.py	(revision 72052)
@@ -4,6 +4,11 @@
 import subprocess
 
 
+class MissingLanguageDataException(Exception):
+    def __init__(self, fn):
+        self.fn = fn
+
+
 @contextmanager
 def cd(newdir):
     prevdir = os.getcwd()
@@ -178,3 +183,14 @@
     kwargs['check'] = True
     print("RUNNING: ", ' '.join(cmd))
     return subprocess.run(cmd, *args, **kwargs)
+
+
+def mk_built_lab(mk_lab, lang_root):
+    try:
+        return mk_lab()
+    except MissingLanguageDataException as e:
+        print("Missing {}... Trying to build it for you.".format(e.fn))
+        with cd(lang_root):
+            check_run(['./autogen.sh'])
+            check_run(['make'])
+        return mk_lab()