diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cd165df
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__
+/.idea
diff --git a/__init__.py b/__init__.py
new file mode 100644
index 0000000..69ed6b8
--- /dev/null
+++ b/__init__.py
@@ -0,0 +1,132 @@
+import os
+import subprocess
+import sys
+
+sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+import lsgm
+import rwx.arg
+import rwx.fs
+import rwx.grub
+import rwx.ps
+
+CHARSET = 'UTF-8'
+
+PGP = 'git@marc.beninca.link'
+
+MODULES = (
+    ('regexp'),
+    ('memdisk', 'tar'),
+    ('search'),
+    ('part_gpt', 'part_msdos'),
+    ('btrfs', 'ext2', 'fat', 'iso9660', 'udf'),
+    ('exfat', 'hfs', 'hfspluscomp', 'ntfscomp'),
+    ('linux', 'loopback', 'squash4'),
+#
+    ('at_keyboard', 'keylayouts', 'keystatus', 'read'),
+    ('halt', 'reboot'),
+    ('all_video', 'videoinfo'),
+    ('gfxterm_background', 'jpeg', 'png', 'tga'),
+#
+    ('date', 'echo', 'eval', 'help', 'sleep', 'test', 'true'),
+    ('cpuid', 'lspci'),
+    ('cat', 'configfile', 'loadenv', 'progress', 'testspeed'),
+    ('hashsum', 'gcry_sha512', 'gcry_sha256'),
+    ('pgp', 'gcry_dsa', 'gcry_rsa'),
+)
+
+
+def build(esp_root: str, data_uuid: str=None) -> None:
+    esp_uuid = rwx.fs.get_path_uuid(esp_root)
+    #
+    memdisk_root = os.path.join(esp_root, 'memdisk')
+    efi_root = os.path.join(esp_root, 'efi')
+    efi_directory = os.path.join(efi_root, 'boot')
+    bios_root = os.path.join(esp_root, 'bios')
+    grub_root = os.path.join(esp_root, 'grub')
+    grub_env = os.path.join(esp_root, 'grub.env')
+    #
+    print(f'''
+esp_root: {esp_root}
+data_uuid: {data_uuid}
+↓
+esp_uuid: {esp_uuid}
+↓
+memdisk_root: {memdisk_root}
+efi_root: {efi_root}
+efi_directory: {efi_directory}
+bios_root: {bios_root}
+grub_root: {grub_root}
+grub_env: {grub_env}
+''', end=str())
+    #
+    memdisk_directory = os.path.join(memdisk_root, 'boot', 'grub')
+    memdisk_file = os.path.join(memdisk_directory, 'grub.cfg')
+    memdisk_archive = os.path.join(memdisk_root, 'boot.tar')
+    #
+    print(f'''
+memdisk_directory: {memdisk_directory}
+memdisk_file: {memdisk_file}
+memdisk_archive: {memdisk_archive}
+''', end=str())
+    #
+    rwx.fs.wipe(memdisk_root)
+    rwx.fs.make_directory(memdisk_directory)
+    rwx.fs.empty_file(memdisk_file)
+    # EFI
+    rwx.fs.wipe(efi_root)
+    rwx.fs.make_directory(efi_directory)
+    # BIOS
+    rwx.fs.wipe(bios_root)
+    rwx.fs.make_directory(bios_root)
+    #
+    rwx.fs.wipe(memdisk_root)
+    # GRUB
+    rwx.fs.wipe(grub_root)
+    # GRUB / environment
+    rwx.fs.write(grub_env,
+        rwx.grub.ENV_HEADER.ljust(rwx.grub.ENV_BYTES, rwx.grub.ENV_COMMENT))
+
+
+def __main__():
+    esp()
+
+
+def main(main_file: str) -> None:
+    function, _ = os.path.splitext(os.path.basename(main_file))
+    getattr(lsgm, function)()
+
+
+def doc():
+    root = os.path.dirname(__file__)
+    file = os.path.join(root, 'todo')
+    subprocess.run([
+        'dot',
+        f'{file}.gv',
+        '-T', 'svg',
+        '-o', f'{file}.svg',
+    ])
+
+
+def esp():
+    command, args = rwx.arg.split()
+    if args:
+        data, *args = args
+    else:
+        data = None
+    project_file = os.path.realpath(__file__)
+    project_root = os.path.dirname(project_file)
+    parent_root, project_name = os.path.split(project_root)
+    #
+    print(f'''
+command: {command}
+data: {data}
+args: {args}
+↓
+project_file: {project_file}
+project_root: {project_root}
+parent_root: {parent_root}
+project_name: {project_name}
+''', end=str())
+    #
+    if project_name:
+        build(parent_root, data_uuid=data)
diff --git a/__main__.py b/__main__.py
old mode 100644
new mode 100755
index 8efc5be..ee6c888
--- a/__main__.py
+++ b/__main__.py
@@ -1,116 +1,7 @@
-#! /usr/bin/env python3
-
-import os
-import subprocess
-import sys
-
-import rwx.arg
-import rwx.fs
-import rwx.grub
-import rwx.ps
-
-CHARSET = 'UTF-8'
-
-PGP = 'git@marc.beninca.link'
-
-MODULES = (
-    ('regexp'),
-    ('memdisk', 'tar'),
-    ('search'),
-    ('part_gpt', 'part_msdos'),
-    ('btrfs', 'ext2', 'fat', 'iso9660', 'udf'),
-    ('exfat', 'hfs', 'hfspluscomp', 'ntfscomp'),
-    ('linux', 'loopback', 'squash4'),
-#
-    ('at_keyboard', 'keylayouts', 'keystatus', 'read'),
-    ('halt', 'reboot'),
-    ('all_video', 'videoinfo'),
-    ('gfxterm_background', 'jpeg', 'png', 'tga'),
-#
-    ('date', 'echo', 'eval', 'help', 'sleep', 'test', 'true'),
-    ('cpuid', 'lspci'),
-    ('cat', 'configfile', 'loadenv', 'progress', 'testspeed'),
-    ('hashsum', 'gcry_sha512', 'gcry_sha256'),
-    ('pgp', 'gcry_dsa', 'gcry_rsa'),
-)
-
-
-def build(esp_root: str, data_uuid: str=None) -> None:
-    esp_uuid = rwx.fs.get_path_uuid(esp_root)
-    #
-    memdisk_root = os.path.join(esp_root, 'memdisk')
-    efi_root = os.path.join(esp_root, 'efi')
-    efi_directory = os.path.join(efi_root, 'boot')
-    bios_root = os.path.join(esp_root, 'bios')
-    grub_root = os.path.join(esp_root, 'grub')
-    grub_env = os.path.join(esp_root, 'grub.env')
-    #
-    print(f'''
-esp_root: {esp_root}
-data_uuid: {data_uuid}
-↓
-esp_uuid: {esp_uuid}
-↓
-memdisk_root: {memdisk_root}
-efi_root: {efi_root}
-efi_directory: {efi_directory}
-bios_root: {bios_root}
-grub_root: {grub_root}
-grub_env: {grub_env}
-''', end=str())
-    #
-    memdisk_directory = os.path.join(memdisk_root, 'boot', 'grub')
-    memdisk_file = os.path.join(memdisk_directory, 'grub.cfg')
-    memdisk_archive = os.path.join(memdisk_root, 'boot.tar')
-    #
-    print(f'''
-memdisk_directory: {memdisk_directory}
-memdisk_file: {memdisk_file}
-memdisk_archive: {memdisk_archive}
-''', end=str())
-    #
-    rwx.fs.wipe(memdisk_root)
-    rwx.fs.make_directory(memdisk_directory)
-    rwx.fs.empty_file(memdisk_file)
-    # EFI
-    rwx.fs.wipe(efi_root)
-    rwx.fs.make_directory(efi_directory)
-    # BIOS
-    rwx.fs.wipe(bios_root)
-    rwx.fs.make_directory(bios_root)
-    #
-    rwx.fs.wipe(memdisk_root)
-    # GRUB
-    rwx.fs.wipe(grub_root)
-    # GRUB / environment
-    rwx.fs.write(grub_env,
-        rwx.grub.ENV_HEADER.ljust(rwx.grub.ENV_BYTES, rwx.grub.ENV_COMMENT))
-
-
-def main() -> None:
-    command, args = rwx.arg.split()
-    if args:
-        data, *args = args
-    else:
-        data = None
-    project_file = os.path.realpath(__file__)
-    project_root = os.path.dirname(project_file)
-    parent_root, project_name = os.path.split(project_root)
-    #
-    print(f'''
-command: {command}
-data: {data}
-args: {args}
-↓
-project_file: {project_file}
-project_root: {project_root}
-parent_root: {parent_root}
-project_name: {project_name}
-''', end=str())
-    #
-    if project_name:
-        build(parent_root, data_uuid=data)
-
-
 if __name__ == '__main__':
-    main()
+    import os
+    import sys
+    sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+    #
+    import lsgm
+    lsgm.main(__file__)
diff --git a/doc.py b/doc.py
index 1aadd6c..ee6c888 100644
--- a/doc.py
+++ b/doc.py
@@ -1,13 +1,7 @@
-import os
-import subprocess
-
-
 if __name__ == '__main__':
-    root = os.path.dirname(__file__)
-    file = os.path.join(root, 'todo')
-    subprocess.run([
-        'dot',
-        f'{file}.gv',
-        '-T', 'svg',
-        '-o', f'{file}.svg',
-    ])
+    import os
+    import sys
+    sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+    #
+    import lsgm
+    lsgm.main(__file__)
diff --git a/esp.py b/esp.py
new file mode 100644
index 0000000..ee6c888
--- /dev/null
+++ b/esp.py
@@ -0,0 +1,7 @@
+if __name__ == '__main__':
+    import os
+    import sys
+    sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+    #
+    import lsgm
+    lsgm.main(__file__)