diff --git a/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py b/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
index b34ee7c..80189b9 100644
--- a/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
+++ b/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 import glob
 import io
+import tempfile
 import dataclasses
 import pathlib
 import sys
@@ -15,11 +16,13 @@ logger = logging.getLogger(__name__)
 
 @dataclasses.dataclass
 class PyProject:
+    path: pathlib.Path
     dependencies: dict[str, list[str]]
     early_features: Optional[list[str]] = None
     pip_find_links: Optional[list[pathlib.Path]] = None
     runtime_libdirs: Optional[list[pathlib.Path]] = None
     runtime_preload: Optional[list[pathlib.Path]] = None
+    requirements: dict[str, pathlib.Path] = dataclasses.field(default_factory=lambda : dict())
 
 def pyproject_load(
     d: pathlib.Path,
@@ -49,6 +52,7 @@ def pyproject_load(
 
 
     res = PyProject(
+        path=d,
         dependencies=dependencies,
     )
 
@@ -88,12 +92,28 @@ def pyproject_load(
                 for o in content['tool'][tool_name]['runtime_preload']
             ]
 
+        if 'requirements' in content['tool'][tool_name]:
+            assert isinstance(content['tool'][tool_name]['requirements'], dict)
+
+            res.requirements = {
+                k : d.parent / pathlib.Path(v)
+                # pathlib.Path(o)
+                for k, v in content['tool'][tool_name]['requirements'].items()
+            }
+
     return res
 
 @dataclasses.dataclass
 class BootstrapSettings:
     env_path: pathlib.Path
     python_path: pathlib.Path
+    base_dir: pathlib.Path
+    uv_args: list[str] = dataclasses.field(
+        default_factory=lambda : os.environ.get(
+            'UV_ARGS',
+            '--offline',
+        ).split(),
+    )
 
     @classmethod
     def get(
@@ -107,6 +127,7 @@ class BootstrapSettings:
         python_path = env_path / 'bin' / 'python3'
 
         return cls(
+            base_dir=base_dir,
             env_path=env_path,
             python_path=python_path,
         )
@@ -125,49 +146,26 @@ def env_bootstrap(
         for o in pip_find_links
     ], [])
 
-    subprocess.check_call([
-        'uv', 'venv',
-        *pip_find_links_args,
-        # '--seed',
-        '--offline',
-        str(bootstrap_settings.env_path)
+    features : list[str] = []
+
+    if pyproject.early_features:
+        features.extend(pyproject.early_features)
+
+    requirements_name = '_'.join(sorted(features))
+
+    requirements_path : Optional[pathlib.Path] = None
+
+    if requirements_name in pyproject.requirements:
+        requirements_path = pyproject.requirements[requirements_name]
+    else:
+        requirements_path = pyproject.path.parent / 'requirements.txt'
+
+    requirements_in : list[str] = []
+
+    requirements_in.extend([
+        'uv', 'pip', 'build', 'setuptools', 'meson-python', 'pybind11'
     ])
 
-    subprocess.check_call([
-        'uv',
-        'pip',
-        'install',
-        *pip_find_links_args,
-        '-p',
-        bootstrap_settings.python_path,
-        '--offline',
-        'uv', 'pip',
-    ])
-
-    subprocess.check_call([
-        bootstrap_settings.python_path,
-        '-m',
-        'uv', 'pip', 'install',
-        *pip_find_links_args,
-        '--offline',
-        'build', 'setuptools', 'meson-python', 'pybind11',
-    ])
-
-    # early_wheels = glob.glob(
-    #     str(
-    #         pathlib.Path(__file__).parent / 'deps' / 'dist' / 'early' / '*.whl'
-    #     )
-    # )
-
-    # if len(early_wheels) > 0:
-    #     subprocess.check_call([
-    #         bootstrap_settings.python_path,
-    #         '-m',
-    #         'uv', 'pip', 'install',
-    #         '--offline',
-    #         *early_wheels,
-    #     ])
-
     if pyproject.early_features:
         early_dependencies = sum([
             pyproject.dependencies[o]
@@ -178,17 +176,61 @@ def env_bootstrap(
             early_dependencies=early_dependencies,
         ))
 
-        if len(early_dependencies) > 0:
+        requirements_in.extend(early_dependencies)
+        # if len(early_dependencies) > 0:
+        #     subprocess.check_call([
+        #         bootstrap_settings.python_path,
+        #         '-m',
+        #         'uv', 'pip', 'install',
+        #         *pip_find_links_args,
+        #         # '-f', str(pathlib.Path(__file__).parent / 'deps' / 'dist'),
+        #         *bootstrap_settings.uv_args,
+        #         *early_dependencies,
+        #     ])
+
+    if not requirements_path.exists():
+        with tempfile.NamedTemporaryFile(
+            mode='w',
+            prefix='requirements',
+            suffix='.in',
+        ) as f:
+            f.write(
+                '\n'.join(requirements_in)
+            )
+            f.flush()
+
             subprocess.check_call([
-                bootstrap_settings.python_path,
-                '-m',
-                'uv', 'pip', 'install',
+                'uv',
+                'pip',
+                'compile',
                 *pip_find_links_args,
-                # '-f', str(pathlib.Path(__file__).parent / 'deps' / 'dist'),
-                '--offline',
-                *early_dependencies,
+                '-p',
+                bootstrap_settings.python_path,
+                *bootstrap_settings.uv_args,
+                '-r', f.name,
+                '-o', str(requirements_path),
             ])
 
+    subprocess.check_call([
+        'uv', 'venv',
+        *pip_find_links_args,
+        # '--seed',
+        *bootstrap_settings.uv_args,
+        str(bootstrap_settings.env_path)
+    ])
+
+    subprocess.check_call([
+        'uv',
+        'pip',
+        'install',
+        *pip_find_links_args,
+        '-p',
+        bootstrap_settings.python_path,
+        *bootstrap_settings.uv_args,
+        '-r', str(requirements_path),
+    ])
+
+
 def paths_equal(
     a: pathlib.Path | str,
     b: pathlib.Path | str