Allow usage of system-installed libraries

Author: WillAyd

python/meson.build

@@ -20,7 +20,7 @@ project(
     'cython',
     'cpp',
     version: run_command(
-        'python',
+        'python3',
         '-m',
         'setuptools_scm',
         '--force-write-version-files',

python/meson.options

@@ -19,7 +19,7 @@ option(
     'acero',
     type: 'feature',
     description: 'build the Acero Engine extension',
-    value: 'enabled',
+    value: 'auto',
 )
 
 option(
@@ -61,14 +61,14 @@ option(
     'gcs',
     type: 'feature',
     description: 'build the Google Cloud Storage (GCS) extension',
-    value: 'enabled',
+    value: 'auto',
 )
 
 option(
     'hdfs',
     type: 'feature',
     description: 'build the HDFS extension',
-    value: 'enabled',
+    value: 'auto',
 )
 
 # TODO: check how CMake handled the JSON feature - was not there when
@@ -78,7 +78,7 @@ option(
     'json',
     type: 'feature',
     description: 'Build Arrow with JSON support',
-    value: 'enabled',
+    value: 'auto',
 )
 
 option(

python/pyarrow/meson.build

@@ -125,7 +125,6 @@ if get_option('hdfs').enabled()
 endif
 
 if get_option('cuda').enabled()
-    error('arrow-cuda dep not yet implemented')
     cuda_dep = dependency('arrow-cuda')
     cython_modules += {'_cuda': {'dependencies': cuda_dep}}
 endif
@@ -141,7 +140,6 @@ if needs_dataset
 endif
 
 if get_option('parquet').enabled()
-    error('parquet dep not yet implemented')
     parquet_dep = dependency('parquet')
     cython_modules += {'_parquet': {'dependencies': parquet_dep}}
 
@@ -235,7 +233,6 @@ if needs_substrait
 endif
 
 if get_option('gandiva').enabled()
-    error('gandiva dep not yet implemented')
     gandiva_dep = dependency('gandiva')
     cython_modules += {'gandiva': {'dependencies': gandiva_dep}}
 endif