Update miniconda installer to 4.7.12; Fix hashes to avoid...

This MR addresses the following changes:

1. Update miniconda installer to 4.7.12
2. Reset installer hashes to avoid Mac re-downloads
3. Black-ify bootstrap source code

bob/devtools/bootstrap.py

@@ -45,48 +45,63 @@ import logging
 
 logger = logging.getLogger(__name__)
 
+
 def do_hack(project_dir):
     """
     This function is supposed to be for temporary usage.
-    
+
     It implements hacks for the issues: https://gitlab.idiap.ch/bob/bob.devtools/merge_requests/112
     and https://github.com/conda/conda-build/issues/3767)
-       
+
     """
-    
+
     #### HACK to avoid ripgrep ignoring bin/ directories in our checkouts
-    import shutil    
-    git_ignore_file = os.path.join(project_dir, '.gitignore')
+    import shutil
+
+    git_ignore_file = os.path.join(project_dir, ".gitignore")
     if os.path.exists(git_ignore_file):
-        logger.warn('Removing ".gitignore" to overcome issues with ripgrep')
-        logger.warn('See https://gitlab.idiap.ch/bob/bob.devtools/merge_requests/112')
+        logger.warning('Removing ".gitignore" to overcome issues with ripgrep')
+        logger.warning(
+            "See https://gitlab.idiap.ch/bob/bob.devtools/merge_requests/112"
+        )
         os.unlink(git_ignore_file)
     #### END OF HACK
-        
+
     #### HACK that avoids this issue: https://github.com/conda/conda-build/issues/3767
-    license_file = os.path.join(project_dir, 'LICENSE')
+    license_file = os.path.join(project_dir, "LICENSE")
     if not os.path.exists(license_file):
-        license_file = os.path.join(project_dir, 'LICENSE.AGPL')
-    
-    recipe_dir = os.path.join(project_dir, 'conda')    
+        license_file = os.path.join(project_dir, "LICENSE.AGPL")
+
+    recipe_dir = os.path.join(project_dir, "conda")
     if os.path.exists(license_file) and os.path.exists(recipe_dir):
-        logger.warn('Copying LICENSE file to `./conda` dir to avoid issue with conda build (https://github.com/conda/conda-build/issues/3767)')
-        logger.warn('Replacing ../LICENSE to LICENSE (https://github.com/conda/conda-build/issues/3767)')        
-        shutil.copyfile(license_file, os.path.join(recipe_dir,  os.path.basename(license_file) ))
-        
+        logger.warning(
+            "Copying LICENSE file to `./conda` dir to avoid issue with conda build (https://github.com/conda/conda-build/issues/3767)"
+        )
+        logger.warning(
+            "Replacing ../LICENSE to LICENSE (https://github.com/conda/conda-build/issues/3767)"
+        )
+        shutil.copyfile(
+            license_file,
+            os.path.join(recipe_dir, os.path.basename(license_file)),
+        )
+
         # Checking COPYING file just in case
-        copying_file = os.path.join(project_dir, 'COPYING')
-        if(os.path.exists(copying_file)):
-            shutil.copyfile(copying_file, os.path.join(recipe_dir,"COPYING"))
-            
-        meta_file = os.path.join(recipe_dir,"meta.yaml")
+        copying_file = os.path.join(project_dir, "COPYING")
+        if os.path.exists(copying_file):
+            shutil.copyfile(copying_file, os.path.join(recipe_dir, "COPYING"))
+
+        meta_file = os.path.join(recipe_dir, "meta.yaml")
         recipe = open(meta_file).readlines()
-        recipe = [l.replace("../COPYING","COPYING").replace("../LICENSE","LICENSE").replace("../LICENSE.AGPL","LICENSE.AGPL") for l in recipe]
-        open(meta_file, "wt").write(''.join(recipe))
+        recipe = [
+            l.replace("../COPYING", "COPYING")
+            .replace("../LICENSE", "LICENSE")
+            .replace("../LICENSE.AGPL", "LICENSE.AGPL")
+            for l in recipe
+        ]
+        open(meta_file, "wt").write("".join(recipe))
     #### END OF HACK
 
 
-
 def set_environment(name, value, env=os.environ):
     """Function to setup the environment variable and print debug message.
 
@@ -252,24 +267,27 @@ def ensure_miniconda_sh():
     server = "repo.continuum.io"  # https
 
     # WARNING: if you update this version, remember to update hahes below
-    path = "/miniconda/Miniconda3-4.7.10-%s-x86_64.sh"
+    path = "/miniconda/Miniconda3-4.7.12-%s-x86_64.sh"
     if platform.system() == "Darwin":
-        md5sum = 'b9974b2ef1b17b8be9b1fd2c619c6702'
+        md5sum = "677f38d5ab7e1ce4fef134068e3bd76a"
         path = path % "MacOSX"
     else:
-        md5sum = '1c945f2b3335c7b2b15130b1b2dc5cf4'
+        md5sum = "0dba759b8ecfc8948f626fa18785e3d8"
         path = path % "Linux"
 
     if os.path.exists("miniconda.sh"):
         logger.info("(check) miniconda.sh md5sum (== %s?)", md5sum)
         import hashlib
+
         actual_md5 = hashlib.md5(open("miniconda.sh", "rb").read()).hexdigest()
         if actual_md5 == md5sum:
             logger.info("Re-using cached miniconda3 installer (hash matches)")
             return
         else:
-            logger.info("Erasing cached miniconda3 installer (%s does NOT " \
-                "match)", actual_md5)
+            logger.info(
+                "Erasing cached miniconda3 installer (%s does NOT " "match)",
+                actual_md5,
+            )
             os.unlink("miniconda.sh")
 
     # re-downloads installer
@@ -489,10 +507,12 @@ if __name__ == "__main__":
         # http://www.idiap.ch/software/bob/defaults with so it is optimized for
         # a CI build.  Notice we consider this script is only executed in this
         # context.  The URL should NOT work outside of Idiap's network.
-        f.write(_BASE_CONDARC.replace(
-                'https://repo.anaconda.com/pkgs/main',
-                'http://www.idiap.ch/defaults',
-                ))
+        f.write(
+            _BASE_CONDARC.replace(
+                "https://repo.anaconda.com/pkgs/main",
+                "http://www.idiap.ch/defaults",
+            )
+        )
 
     conda_version = "4"
     conda_build_version = "3"