Add a which command for locating binary deps

python_appimage/__main__.py

@@ -9,6 +9,13 @@ __all__ = ['main']
 
 
 def main():
+    '''Entry point for the CLI
+    '''
+
+    # Binary dependencies
+    binaries = ('appimagetool', 'patchelf')
+
+
     # Parse arguments
     parser = argparse.ArgumentParser(
         prog='python-appimage',
@@ -25,7 +32,7 @@ def main():
     install_parser = subparsers.add_parser('install',
         description='Install binary dependencies')
     install_parser.add_argument('binary', nargs='+',
-        choices=('appimagetool', 'patchelf'), help='one or more binary name')
+        choices=binaries, help='one or more binary name')
 
     local_parser = subparsers.add_parser('local',
         description='Bundle a local Python installation')
@@ -43,6 +50,11 @@ def main():
     manylinux_parser.add_argument('--contained', help=argparse.SUPPRESS,
                                   action='store_true', default=False)
 
+    which_parser = subparsers.add_parser('which',
+        description='Locate a binary dependency')
+    which_parser.add_argument('binary', choices=binaries,
+        help='name of the binary to locate')
+
     args = parser.parse_args()
 
     # Configure the verbosity

python_appimage/commands/install.py

@@ -4,8 +4,6 @@ from ..utils import deps
 from ..utils.log import log
 
 
-
-
 __all__ = ['execute']
 
 

python_appimage/commands/which.py

@@ -0,0 +1,21 @@
+import os
+
+from ..utils import deps
+from ..utils.log import log
+
+
+__all__ = ['execute']
+
+
+def _unpack_args(args):
+    '''Unpack command line arguments
+    '''
+    return (args.binary,)
+
+
+def execute(binary):
+    '''Print the location of a binary dependency
+    '''
+    path = os.path.join(os.path.dirname(deps.PATCHELF), binary)
+    if os.path.exists(path):
+        print(path)