Single binary executables (#1330)

* Single binary executables / DEB packages.

* Attach single binary executables to the releases

extras/packaging/linux/build.py

@@ -0,0 +1,100 @@
+import stat
+import subprocess
+from pathlib import Path
+from typing import Iterator, Tuple
+
+BUILD_DIR = Path(__file__).parent
+HTTPIE_DIR = BUILD_DIR.parent.parent.parent
+
+SCRIPT_DIR = BUILD_DIR / Path('scripts')
+HOOKS_DIR = SCRIPT_DIR / 'hooks'
+
+DIST_DIR = BUILD_DIR / 'dist'
+
+TARGET_SCRIPTS = {
+    SCRIPT_DIR / 'http_cli.py': [],
+    SCRIPT_DIR / 'httpie_cli.py': ['--hidden-import=pip'],
+}
+
+
+def build_binaries() -> Iterator[Tuple[str, Path]]:
+    for target_script, extra_args in TARGET_SCRIPTS.items():
+        subprocess.check_call(
+            [
+                'pyinstaller',
+                '--onefile',
+                '--noupx',
+                '-p',
+                HTTPIE_DIR,
+                '--additional-hooks-dir',
+                HOOKS_DIR,
+                *extra_args,
+                target_script,
+            ]
+        )
+
+    for executable_path in DIST_DIR.iterdir():
+        if executable_path.suffix:
+            continue
+        stat_r = executable_path.stat()
+        executable_path.chmod(stat_r.st_mode | stat.S_IEXEC)
+        yield executable_path.stem, executable_path
+
+
+def build_packages(http_binary: Path, httpie_binary: Path) -> None:
+    import httpie
+
+    # Mapping of src_file -> dst_file
+    files = [
+        (http_binary, '/usr/bin/http'),
+        (http_binary, '/usr/bin/https'),
+        (httpie_binary, '/usr/bin/httpie'),
+    ]
+    # A list of additional dependencies
+    deps = [
+        'python3 >= 3.7',
+        'python3-pip'
+    ]
+
+    processed_deps = [
+        f'--depends={dep}'
+        for dep in deps
+    ]
+    processed_files = [
+        '='.join([str(src.resolve()), dst]) for src, dst in files
+    ]
+    for target in ['deb', 'rpm']:
+        subprocess.check_call(
+            [
+                'fpm',
+                '--force',
+                '-s',
+                'dir',
+                '-t',
+                target,
+                '--name',
+                'httpie',
+                '--version',
+                httpie.__version__,
+                '--description',
+                httpie.__doc__.strip(),
+                '--license',
+                httpie.__licence__,
+                *processed_deps,
+                *processed_files,
+            ],
+            cwd=DIST_DIR,
+        )
+
+
+def main():
+    binaries = dict(build_binaries())
+    build_packages(binaries['http_cli'], binaries['httpie_cli'])
+
+    # Rename http_cli/httpie_cli to http/httpie
+    binaries['http_cli'].rename('http')
+    binaries['httpie_cli'].rename('httpie')
+
+
+if __name__ == '__main__':
+    main()