make-ring: bump qt5 version for OSX

We used qt 5.5.1 since 5.6 was causing errors in the OSX client.
Problem is the 5.5.1 compilation is broken on macOS 10.12 Sierra, This patch
separates the brew unlink process from the install/link process. It gives the
opportunity to be more expressive in the unlink process, in particular we can
unlink all the qt5 versions.

Tuleap: #1362
Change-Id: Iacfc5de47c2f799391a7cbbb40f38f86c5a4bc32

make-ring.py

@@ -37,10 +37,14 @@ APT_INSTALL_SCRIPT = [
     'apt-get install -y %(packages)s --ignore-missing'
 ]
 
+BREW_UNLINK_SCRIPT = [
+    'brew unlink %(packages)s'
+]
+
 BREW_INSTALL_SCRIPT = [
     'brew update',
     'brew install -y %(packages)s',
-    'brew link --force gettext'
+    'brew link --force --overwrite %(packages)s'
 ]
 
 RPM_INSTALL_SCRIPT = [
@@ -142,10 +146,15 @@ ARCH_LINUX_DEPENDENCIES = [
 ]
 
 OSX_DEPENDENCIES = [
-    'autoconf', 'autoconf-archive', 'cmake', 'gettext', 'pkg-config', 'homebrew/versions/qt55',
+    'autoconf', 'cmake', 'gettext', 'pkg-config', 'qt5',
     'libtool', 'yasm', 'automake'
 ]
 
+OSX_DEPENDENCIES_UNLINK = [
+    'autoconf*', 'cmake*', 'gettext*', 'pkg-config*', 'qt*', 'qt@5.*',
+    'libtool*', 'yasm*', 'automake*'
+]
+
 UNINSTALL_SCRIPT = [
     'make -C daemon uninstall',
     'xargs rm < lrc/build-global/install_manifest.txt',
@@ -203,6 +212,10 @@ def run_dependencies(args):
         )
 
     elif args.distribution == "OSX":
+        execute_script(
+            BREW_UNLINK_SCRIPT,
+            {"packages": ' '.join(OSX_DEPENDENCIES_UNLINK)}
+        )
         execute_script(
             BREW_INSTALL_SCRIPT,
             {"packages": ' '.join(OSX_DEPENDENCIES)}
@@ -240,7 +253,7 @@ def run_install(args):
     if args.global_install:
         install_args += ' -g'
     if args.distribution == "OSX":
-        proc= subprocess.Popen("brew --prefix homebrew/versions/qt55", shell=True, stdout=subprocess.PIPE)
+        proc= subprocess.Popen("brew --prefix qt5", shell=True, stdout=subprocess.PIPE)
         qt5dir = proc.stdout.read()
         os.environ['CMAKE_PREFIX_PATH'] = str(qt5dir.decode('ascii'))
         install_args += " -c client-macosx"