Added some checks

protonfixes/checks.py

@@ -1,8 +1,10 @@
 """ Run some tests and generate warnings for proton configuration issues
 """
 
+import shutil
 from .logger import log
 
+
 def esync_file_limits():
     """
     Check esync file limits using /proc/sys/fs/file-max
@@ -19,11 +21,68 @@ def esync_file_limits():
         max_files = fsmax.readline()
         if int(max_files) < 8192:
             log.warn(warning)
+            return False
+    return True
+
+
+def check_winetricks():
+    """ Check if winetricks is installed """
+
+    warning = '''winetricks was not found in your $PATH
+    Installation is recommended because many gamefixes require
+    winetricks to install software and make configuration
+    changes in Proton wine prefixes. To install winetricks
+    use your system's package manager or use the directions here:
+    https://wiki.winehq.org/Winetricks#Installing_winetricks
+    '''
+
+    if not shutil.which('winetricks'):
+        log.warn(warning)
+        return False
+    return True
+
+
+def check_zenity():
+    """ Check if zenity is installed """
+
+    warning = '''zenity was not found in your $PATH
+    Installation is recommended because zenity is used to
+    indicate that protonfixes is doing work while waiting
+    for a game to launch. To install zenity use your system's
+    package manager.
+    '''
+
+    if not shutil.which('zenity'):
+        log.warn(warning)
+        return False
+    return True
+
+
+def check_cabextract_or_bsdtar():
+    """ Check if cabextract or bsdtar is installed """
+
+    warning = '''cabextract or bsdtar were not found in your $PATH
+    Installation is recommended because protonfixes uses bsdtar or
+    cabextract to extract Microsoft core fonts for installation into
+    Proton wine prefixes. To install cabextract or bsdtar use your
+    system's package manager.
+    '''
 
+    if not shutil.which('cabextract') and not shutil.which('bsdtar'):
+        log.warn(warning)
+        return False
+    return True
 
 def run_checks():
     """ Run checks to notify of any potential issues
     """
 
     log.info('Running checks')
-    esync_file_limits()
+    checks = [
+        esync_file_limits(),
+        check_winetricks(),
+        check_zenity(),
+        check_cabextract_or_bsdtar(),
+        ]
+    if all(checks):
+        log.info('All checks successful')