diff --git a/migra/changes.py b/migra/changes.py
index 406c5d9..c442342 100644
--- a/migra/changes.py
+++ b/migra/changes.py
@@ -3,6 +3,8 @@ from __future__ import unicode_literals
 from collections import OrderedDict as od
 from functools import partial
 
+from networkx import lexicographical_topological_sort, DiGraph
+
 import schemainspect
 
 from .statements import Statements
@@ -21,6 +23,7 @@ THINGS = [
     "collations",
     "rlspolicies",
     "triggers",
+    "comments",
 ]
 PK = "PRIMARY KEY"
 
@@ -227,11 +230,23 @@ def get_table_changes(
 
     statements += enums_pre
 
-    for t, v in added.items():
-        statements.append(v.create_statement)
-        if v.rowsecurity:
-            rls_alter = v.alter_rls_statement
-            statements.append(rls_alter)
+    # topologial sort of tables using table.dependents
+    # this is to ensure that tables are created in the correct order
+    # so that foreign keys can be created
+
+    G = DiGraph()
+    G.add_nodes_from(tables_target.keys())
+    for t, v in tables_target.items():
+        G.add_edges_from((t, d) for d in v.dependents)
+
+    tables_sorted = {k: tables_target[k] for k in lexicographical_topological_sort(G) if k in tables_target}
+
+    for t, v in tables_sorted.items():
+        if t in added:
+            statements.append(v.create_statement)
+            if v.rowsecurity:
+                rls_alter = v.alter_rls_statement
+                statements.append(rls_alter)
 
     statements += enums_post
 
@@ -365,7 +380,6 @@ def get_selectable_differences(
     not_replaceable = set()
 
     if add_dependents_for_modified:
-
         for k, m in changed_all.items():
             old = selectables_from[k]
 
@@ -478,7 +492,7 @@ def get_selectable_changes(
     statements = Statements()
 
     def functions(d):
-        return {k: v for k, v in d.items() if v.relationtype == "f"}
+        return {k: v for k, v in d.items() if v.relationtype in ("f", "a")}
 
     if not tables_only:
         if not creations_only:
@@ -656,6 +670,15 @@ class Changes(object):
             modifications=False,
         )
 
+    @property
+    def comments(self):
+        return partial(
+            statements_for_changes,
+            self.i_from.comments,
+            self.i_target.comments,
+            modifications=False,
+        )
+
     def __getattr__(self, name):
         if name in THINGS:
             return partial(
diff --git a/migra/migra.py b/migra/migra.py
index 6034687..0729060 100644
--- a/migra/migra.py
+++ b/migra/migra.py
@@ -85,6 +85,7 @@ class Migration(object):
             self.add(self.changes.extensions(drops_only=True))
 
     def add_all_changes(self, privileges=False):
+        self.add(self.changes.comments(drops_only=True))
         self.add(self.changes.schemas(creations_only=True))
 
         self.add(self.changes.extensions(creations_only=True, modifications=False))
@@ -122,6 +123,7 @@ class Migration(object):
         self.add(self.changes.triggers(creations_only=True))
         self.add(self.changes.collations(drops_only=True))
         self.add(self.changes.schemas(drops_only=True))
+        self.add(self.changes.comments(creations_only=True))
 
     @property
     def sql(self):
diff --git a/poetry.lock b/poetry.lock
index 20bc614..e1dedb8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,465 +1,29 @@
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
+
 [[package]]
 name = "attrs"
 version = "22.1.0"
 description = "Classes Without Boilerplate"
-category = "dev"
 optional = false
 python-versions = ">=3.5"
+files = [
+    {file = "attrs-22.1.0-py2.py3-none-any.whl", hash = "sha256:86efa402f67bf2df34f51a335487cf46b1ec130d02b8d39fd248abfd30da551c"},
+    {file = "attrs-22.1.0.tar.gz", hash = "sha256:29adc2665447e5191d0e7c568fde78b21f9672d344281d0c6e1ab085429b22b6"},
+]
 
 [package.extras]
 dev = ["cloudpickle", "coverage[toml] (>=5.0.2)", "furo", "hypothesis", "mypy (>=0.900,!=0.940)", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "sphinx", "sphinx-notfound-page", "zope.interface"]
 docs = ["furo", "sphinx", "sphinx-notfound-page", "zope.interface"]
 tests = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy (>=0.900,!=0.940)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "zope.interface"]
-tests_no_zope = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy (>=0.900,!=0.940)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins"]
+tests-no-zope = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy (>=0.900,!=0.940)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins"]
 
 [[package]]
 name = "black"
 version = "22.8.0"
 description = "The uncompromising code formatter."
-category = "dev"
 optional = false
 python-versions = ">=3.6.2"
-
-[package.dependencies]
-click = ">=8.0.0"
-mypy-extensions = ">=0.4.3"
-pathspec = ">=0.9.0"
-platformdirs = ">=2"
-tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
-typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
-typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
-
-[package.extras]
-colorama = ["colorama (>=0.4.3)"]
-d = ["aiohttp (>=3.7.4)"]
-jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
-uvloop = ["uvloop (>=0.15.2)"]
-
-[[package]]
-name = "click"
-version = "8.1.3"
-description = "Composable command line interface toolkit"
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[package.dependencies]
-colorama = {version = "*", markers = "platform_system == \"Windows\""}
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
-
-[[package]]
-name = "colorama"
-version = "0.4.5"
-description = "Cross-platform colored terminal text."
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-
-[[package]]
-name = "commonmark"
-version = "0.9.1"
-description = "Python parser for the CommonMark Markdown spec"
-category = "dev"
-optional = false
-python-versions = "*"
-
-[package.extras]
-test = ["flake8 (==3.7.8)", "hypothesis (==3.55.3)"]
-
-[[package]]
-name = "coverage"
-version = "6.4.4"
-description = "Code coverage measurement for Python"
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[package.dependencies]
-tomli = {version = "*", optional = true, markers = "python_full_version <= \"3.11.0a6\" and extra == \"toml\""}
-
-[package.extras]
-toml = ["tomli"]
-
-[[package]]
-name = "flake8"
-version = "5.0.4"
-description = "the modular source code checker: pep8 pyflakes and co"
-category = "dev"
-optional = false
-python-versions = ">=3.6.1"
-
-[package.dependencies]
-importlib-metadata = {version = ">=1.1.0,<4.3", markers = "python_version < \"3.8\""}
-mccabe = ">=0.7.0,<0.8.0"
-pycodestyle = ">=2.9.0,<2.10.0"
-pyflakes = ">=2.5.0,<2.6.0"
-
-[[package]]
-name = "greenlet"
-version = "1.1.3"
-description = "Lightweight in-process concurrent programming"
-category = "main"
-optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
-
-[package.extras]
-docs = ["Sphinx"]
-
-[[package]]
-name = "importlib-metadata"
-version = "4.2.0"
-description = "Read metadata from Python packages"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
-zipp = ">=0.5"
-
-[package.extras]
-docs = ["jaraco.packaging (>=8.2)", "rst.linker (>=1.9)", "sphinx"]
-testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pep517", "pyfakefs", "pytest (>=4.6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-flake8", "pytest-mypy"]
-
-[[package]]
-name = "iniconfig"
-version = "1.1.1"
-description = "iniconfig: brain-dead simple config-ini parsing"
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "isort"
-version = "5.10.1"
-description = "A Python utility / library to sort Python imports."
-category = "dev"
-optional = false
-python-versions = ">=3.6.1,<4.0"
-
-[package.extras]
-colors = ["colorama (>=0.4.3,<0.5.0)"]
-pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
-plugins = ["setuptools"]
-requirements_deprecated_finder = ["pip-api", "pipreqs"]
-
-[[package]]
-name = "mccabe"
-version = "0.7.0"
-description = "McCabe checker, plugin for flake8"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[[package]]
-name = "mypy-extensions"
-version = "0.4.3"
-description = "Experimental type system extensions for programs checked with the mypy typechecker."
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "packaging"
-version = "21.3"
-description = "Core utilities for Python packages"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
-
-[[package]]
-name = "pathspec"
-version = "0.10.1"
-description = "Utility library for gitignore style pattern matching of file paths."
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[[package]]
-name = "platformdirs"
-version = "2.5.2"
-description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[package.extras]
-docs = ["furo (>=2021.7.5b38)", "proselint (>=0.10.2)", "sphinx (>=4)", "sphinx-autodoc-typehints (>=1.12)"]
-test = ["appdirs (==1.4.4)", "pytest (>=6)", "pytest-cov (>=2.7)", "pytest-mock (>=3.6)"]
-
-[[package]]
-name = "pluggy"
-version = "1.0.0"
-description = "plugin and hook calling mechanisms for python"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-
-[package.extras]
-dev = ["pre-commit", "tox"]
-testing = ["pytest", "pytest-benchmark"]
-
-[[package]]
-name = "pprintpp"
-version = "0.4.0"
-description = "A drop-in replacement for pprint that's actually pretty"
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "psycopg2-binary"
-version = "2.9.3"
-description = "psycopg2 - Python-PostgreSQL Database Adapter"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[[package]]
-name = "py"
-version = "1.11.0"
-description = "library with cross-python path, ini-parsing, io, code, log facilities"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-
-[[package]]
-name = "pycodestyle"
-version = "2.9.1"
-description = "Python style guide checker"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[[package]]
-name = "pyflakes"
-version = "2.5.0"
-description = "passive checker of Python programs"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[[package]]
-name = "Pygments"
-version = "2.13.0"
-description = "Pygments is a syntax highlighting package written in Python."
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.extras]
-plugins = ["importlib-metadata"]
-
-[[package]]
-name = "pyparsing"
-version = "3.0.9"
-description = "pyparsing module - Classes and methods to define and execute parsing grammars"
-category = "main"
-optional = false
-python-versions = ">=3.6.8"
-
-[package.extras]
-diagrams = ["jinja2", "railroad-diagrams"]
-
-[[package]]
-name = "pytest"
-version = "7.1.3"
-description = "pytest: simple powerful testing with Python"
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[package.dependencies]
-attrs = ">=19.2.0"
-colorama = {version = "*", markers = "sys_platform == \"win32\""}
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-iniconfig = "*"
-packaging = "*"
-pluggy = ">=0.12,<2.0"
-py = ">=1.8.2"
-tomli = ">=1.0.0"
-
-[package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
-
-[[package]]
-name = "pytest-clarity"
-version = "1.0.1"
-description = "A plugin providing an alternative, colourful diff output for failing assertions."
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
-[package.dependencies]
-pprintpp = ">=0.4.0"
-pytest = ">=3.5.0"
-rich = ">=8.0.0"
-
-[[package]]
-name = "pytest-cov"
-version = "3.0.0"
-description = "Pytest plugin for measuring coverage."
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-coverage = {version = ">=5.2.1", extras = ["toml"]}
-pytest = ">=4.6"
-
-[package.extras]
-testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtualenv"]
-
-[[package]]
-name = "rich"
-version = "12.5.1"
-description = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
-category = "dev"
-optional = false
-python-versions = ">=3.6.3,<4.0.0"
-
-[package.dependencies]
-commonmark = ">=0.9.0,<0.10.0"
-pygments = ">=2.6.0,<3.0.0"
-typing-extensions = {version = ">=4.0.0,<5.0", markers = "python_version < \"3.9\""}
-
-[package.extras]
-jupyter = ["ipywidgets (>=7.5.1,<8.0.0)"]
-
-[[package]]
-name = "schemainspect"
-version = "3.1.1663480743"
-description = "Schema inspection for PostgreSQL (and possibly others)"
-category = "main"
-optional = false
-python-versions = ">=3.7,<4"
-
-[package.dependencies]
-sqlalchemy = "*"
-
-[[package]]
-name = "six"
-version = "1.16.0"
-description = "Python 2 and 3 compatibility utilities"
-category = "main"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-
-[[package]]
-name = "SQLAlchemy"
-version = "1.4.41"
-description = "Database Abstraction Library"
-category = "main"
-optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
-
-[package.dependencies]
-greenlet = {version = "!=0.4.17", markers = "python_version >= \"3\" and (platform_machine == \"aarch64\" or platform_machine == \"ppc64le\" or platform_machine == \"x86_64\" or platform_machine == \"amd64\" or platform_machine == \"AMD64\" or platform_machine == \"win32\" or platform_machine == \"WIN32\")"}
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
-
-[package.extras]
-aiomysql = ["aiomysql", "greenlet (!=0.4.17)"]
-aiosqlite = ["aiosqlite", "greenlet (!=0.4.17)", "typing_extensions (!=3.10.0.1)"]
-asyncio = ["greenlet (!=0.4.17)"]
-asyncmy = ["asyncmy (>=0.2.3,!=0.2.4)", "greenlet (!=0.4.17)"]
-mariadb_connector = ["mariadb (>=1.0.1,!=1.1.2)"]
-mssql = ["pyodbc"]
-mssql_pymssql = ["pymssql"]
-mssql_pyodbc = ["pyodbc"]
-mypy = ["mypy (>=0.910)", "sqlalchemy2-stubs"]
-mysql = ["mysqlclient (>=1.4.0)", "mysqlclient (>=1.4.0,<2)"]
-mysql_connector = ["mysql-connector-python"]
-oracle = ["cx_oracle (>=7)", "cx_oracle (>=7,<8)"]
-postgresql = ["psycopg2 (>=2.7)"]
-postgresql_asyncpg = ["asyncpg", "greenlet (!=0.4.17)"]
-postgresql_pg8000 = ["pg8000 (>=1.16.6,!=1.29.0)"]
-postgresql_psycopg2binary = ["psycopg2-binary"]
-postgresql_psycopg2cffi = ["psycopg2cffi"]
-pymysql = ["pymysql", "pymysql (<1)"]
-sqlcipher = ["sqlcipher3_binary"]
-
-[[package]]
-name = "sqlbag"
-version = "0.1.1617247075"
-description = "various snippets of SQL-related boilerplate"
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-packaging = "*"
-six = "*"
-sqlalchemy = "*"
-
-[package.extras]
-maria = ["pymysql"]
-pendulum = ["pendulum", "relativedelta"]
-pg = ["psycopg2"]
-
-[[package]]
-name = "toml"
-version = "0.10.2"
-description = "Python Library for Tom's Obvious, Minimal Language"
-category = "dev"
-optional = false
-python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
-
-[[package]]
-name = "tomli"
-version = "2.0.1"
-description = "A lil' TOML parser"
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[[package]]
-name = "typed-ast"
-version = "1.5.4"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[[package]]
-name = "typing-extensions"
-version = "4.3.0"
-description = "Backported and Experimental Type Hints for Python 3.7+"
-category = "main"
-optional = false
-python-versions = ">=3.7"
-
-[[package]]
-name = "zipp"
-version = "3.8.1"
-description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
-optional = false
-python-versions = ">=3.7"
-
-[package.extras]
-docs = ["jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx"]
-testing = ["func-timeout", "jaraco.itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)"]
-
-[extras]
-pg = ["psycopg2-binary"]
-
-[metadata]
-lock-version = "1.1"
-python-versions = ">=3.7,<4"
-content-hash = "21ffd0af5c9902c2d943b8bf9414108c42f6a45a807f8130a4105fa341d86a85"
-
-[metadata.files]
-attrs = [
-    {file = "attrs-22.1.0-py2.py3-none-any.whl", hash = "sha256:86efa402f67bf2df34f51a335487cf46b1ec130d02b8d39fd248abfd30da551c"},
-    {file = "attrs-22.1.0.tar.gz", hash = "sha256:29adc2665447e5191d0e7c568fde78b21f9672d344281d0c6e1ab085429b22b6"},
-]
-black = [
+files = [
     {file = "black-22.8.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:ce957f1d6b78a8a231b18e0dd2d94a33d2ba738cd88a7fe64f53f659eea49fdd"},
     {file = "black-22.8.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:5107ea36b2b61917956d018bd25129baf9ad1125e39324a9b18248d362156a27"},
     {file = "black-22.8.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:e8166b7bfe5dcb56d325385bd1d1e0f635f24aae14b3ae437102dedc0c186747"},
@@ -484,19 +48,67 @@ black = [
     {file = "black-22.8.0-py3-none-any.whl", hash = "sha256:d2c21d439b2baf7aa80d6dd4e3659259be64c6f49dfd0f32091063db0e006db4"},
     {file = "black-22.8.0.tar.gz", hash = "sha256:792f7eb540ba9a17e8656538701d3eb1afcb134e3b45b71f20b25c77a8db7e6e"},
 ]
-click = [
+
+[package.dependencies]
+click = ">=8.0.0"
+mypy-extensions = ">=0.4.3"
+pathspec = ">=0.9.0"
+platformdirs = ">=2"
+tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
+typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
+
+[package.extras]
+colorama = ["colorama (>=0.4.3)"]
+d = ["aiohttp (>=3.7.4)"]
+jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
+uvloop = ["uvloop (>=0.15.2)"]
+
+[[package]]
+name = "click"
+version = "8.1.3"
+description = "Composable command line interface toolkit"
+optional = false
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+
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+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+optional = false
+python-versions = ">=3.6.8"
+files = [
     {file = "pyparsing-3.0.9-py3-none-any.whl", hash = "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"},
     {file = "pyparsing-3.0.9.tar.gz", hash = "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb"},
 ]
-pytest = [
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
+[[package]]
+name = "pytest"
+version = "7.1.3"
+description = "pytest: simple powerful testing with Python"
+optional = false
+python-versions = ">=3.7"
+files = [
     {file = "pytest-7.1.3-py3-none-any.whl", hash = "sha256:1377bda3466d70b55e3f5cecfa55bb7cfcf219c7964629b967c37cf0bda818b7"},
     {file = "pytest-7.1.3.tar.gz", hash = "sha256:4f365fec2dff9c1162f834d9f18af1ba13062db0c708bf7b946f8a5c76180c39"},
 ]
-pytest-clarity = [
+
+[package.dependencies]
+attrs = ">=19.2.0"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+iniconfig = "*"
+packaging = "*"
+pluggy = ">=0.12,<2.0"
+py = ">=1.8.2"
+tomli = ">=1.0.0"
+
+[package.extras]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
+
+[[package]]
+name = "pytest-clarity"
+version = "1.0.1"
+description = "A plugin providing an alternative, colourful diff output for failing assertions."
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+files = [
     {file = "pytest-clarity-1.0.1.tar.gz", hash = "sha256:505fe345fad4fe11c6a4187fe683f2c7c52c077caa1e135f3e483fe112db7772"},
 ]
-pytest-cov = [
+
+[package.dependencies]
+pprintpp = ">=0.4.0"
+pytest = ">=3.5.0"
+rich = ">=8.0.0"
+
+[[package]]
+name = "pytest-cov"
+version = "3.0.0"
+description = "Pytest plugin for measuring coverage."
+optional = false
+python-versions = ">=3.6"
+files = [
     {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
     {file = "pytest_cov-3.0.0-py3-none-any.whl", hash = "sha256:578d5d15ac4a25e5f961c938b85a05b09fdaae9deef3bb6de9a6e766622ca7a6"},
 ]
-rich = [
+
+[package.dependencies]
+coverage = {version = ">=5.2.1", extras = ["toml"]}
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtualenv"]
+
+[[package]]
+name = "rich"
+version = "12.5.1"
+description = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
+optional = false
+python-versions = ">=3.6.3,<4.0.0"
+files = [
     {file = "rich-12.5.1-py3-none-any.whl", hash = "sha256:2eb4e6894cde1e017976d2975ac210ef515d7548bc595ba20e195fb9628acdeb"},
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 ]
-schemainspect = [
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-]
-six = [
+
+[package.dependencies]
+commonmark = ">=0.9.0,<0.10.0"
+pygments = ">=2.6.0,<3.0.0"
+typing-extensions = {version = ">=4.0.0,<5.0", markers = "python_version < \"3.9\""}
+
+[package.extras]
+jupyter = ["ipywidgets (>=7.5.1,<8.0.0)"]
+
+[[package]]
+name = "schemainspect"
+version = "3.1"
+description = "Schema inspection for PostgreSQL (and possibly others)"
+optional = false
+python-versions = ">=3.7,<4"
+files = []
+develop = false
+
+[package.dependencies]
+sqlalchemy = "*"
+
+[package.source]
+type = "git"
+url = "https://github.com/joshainglis/schemainspect.git"
+reference = "eeda5c18d26fce006a826cfe63f8683b4490a321"
+resolved_reference = "eeda5c18d26fce006a826cfe63f8683b4490a321"
+
+[[package]]
+name = "six"
+version = "1.16.0"
+description = "Python 2 and 3 compatibility utilities"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+files = [
     {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
     {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
 ]
-SQLAlchemy = [
+
+[[package]]
+name = "SQLAlchemy"
+version = "1.4.41"
+description = "Database Abstraction Library"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
+files = [
     {file = "SQLAlchemy-1.4.41-cp27-cp27m-macosx_10_14_x86_64.whl", hash = "sha256:13e397a9371ecd25573a7b90bd037db604331cf403f5318038c46ee44908c44d"},
     {file = "SQLAlchemy-1.4.41-cp27-cp27m-manylinux_2_5_x86_64.manylinux1_x86_64.whl", hash = "sha256:2d6495f84c4fd11584f34e62f9feec81bf373787b3942270487074e35cbe5330"},
     {file = "SQLAlchemy-1.4.41-cp27-cp27m-win32.whl", hash = "sha256:e570cfc40a29d6ad46c9aeaddbdcee687880940a3a327f2c668dd0e4ef0a441d"},
@@ -792,49 +665,89 @@ SQLAlchemy = [
     {file = "SQLAlchemy-1.4.41-cp39-cp39-win_amd64.whl", hash = "sha256:f5fa526d027d804b1f85cdda1eb091f70bde6fb7d87892f6dd5a48925bc88898"},
     {file = "SQLAlchemy-1.4.41.tar.gz", hash = "sha256:0292f70d1797e3c54e862e6f30ae474014648bc9c723e14a2fda730adb0a9791"},
 ]
-sqlbag = [
+
+[package.dependencies]
+greenlet = {version = "!=0.4.17", markers = "python_version >= \"3\" and (platform_machine == \"aarch64\" or platform_machine == \"ppc64le\" or platform_machine == \"x86_64\" or platform_machine == \"amd64\" or platform_machine == \"AMD64\" or platform_machine == \"win32\" or platform_machine == \"WIN32\")"}
+
+[package.extras]
+aiomysql = ["aiomysql", "greenlet (!=0.4.17)"]
+aiosqlite = ["aiosqlite", "greenlet (!=0.4.17)", "typing-extensions (!=3.10.0.1)"]
+asyncio = ["greenlet (!=0.4.17)"]
+asyncmy = ["asyncmy (>=0.2.3,!=0.2.4)", "greenlet (!=0.4.17)"]
+mariadb-connector = ["mariadb (>=1.0.1,!=1.1.2)"]
+mssql = ["pyodbc"]
+mssql-pymssql = ["pymssql"]
+mssql-pyodbc = ["pyodbc"]
+mypy = ["mypy (>=0.910)", "sqlalchemy2-stubs"]
+mysql = ["mysqlclient (>=1.4.0)", "mysqlclient (>=1.4.0,<2)"]
+mysql-connector = ["mysql-connector-python"]
+oracle = ["cx-oracle (>=7)", "cx-oracle (>=7,<8)"]
+postgresql = ["psycopg2 (>=2.7)"]
+postgresql-asyncpg = ["asyncpg", "greenlet (!=0.4.17)"]
+postgresql-pg8000 = ["pg8000 (>=1.16.6,!=1.29.0)"]
+postgresql-psycopg2binary = ["psycopg2-binary"]
+postgresql-psycopg2cffi = ["psycopg2cffi"]
+pymysql = ["pymysql", "pymysql (<1)"]
+sqlcipher = ["sqlcipher3-binary"]
+
+[[package]]
+name = "sqlbag"
+version = "0.1.1617247075"
+description = "various snippets of SQL-related boilerplate"
+optional = false
+python-versions = "*"
+files = [
     {file = "sqlbag-0.1.1617247075-py2.py3-none-any.whl", hash = "sha256:ecdef26d661f8640711030ac6ee618deb92b91f9f0fc2efbf8a3b133af13092d"},
     {file = "sqlbag-0.1.1617247075.tar.gz", hash = "sha256:b9d7862c3b2030356d796ca872907962fd54704066978d7ae89383f5123366ed"},
 ]
-toml = [
+
+[package.dependencies]
+packaging = "*"
+six = "*"
+sqlalchemy = "*"
+
+[package.extras]
+maria = ["pymysql"]
+pendulum = ["pendulum", "relativedelta"]
+pg = ["psycopg2"]
+
+[[package]]
+name = "toml"
+version = "0.10.2"
+description = "Python Library for Tom's Obvious, Minimal Language"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+files = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
-tomli = [
+
+[[package]]
+name = "tomli"
+version = "2.0.1"
+description = "A lil' TOML parser"
+optional = false
+python-versions = ">=3.7"
+files = [
     {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
     {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
 ]
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-]
-typing-extensions = [
+
+[[package]]
+name = "typing-extensions"
+version = "4.3.0"
+description = "Backported and Experimental Type Hints for Python 3.7+"
+optional = false
+python-versions = ">=3.7"
+files = [
     {file = "typing_extensions-4.3.0-py3-none-any.whl", hash = "sha256:25642c956049920a5aa49edcdd6ab1e06d7e5d467fc00e0506c44ac86fbfca02"},
     {file = "typing_extensions-4.3.0.tar.gz", hash = "sha256:e6d2677a32f47fc7eb2795db1dd15c1f34eff616bcaf2cfb5e997f854fa1c4a6"},
 ]
-zipp = [
-    {file = "zipp-3.8.1-py3-none-any.whl", hash = "sha256:47c40d7fe183a6f21403a199b3e4192cca5774656965b0a4988ad2f8feb5f009"},
-    {file = "zipp-3.8.1.tar.gz", hash = "sha256:05b45f1ee8f807d0cc928485ca40a07cb491cf092ff587c0df9cb1fd154848d2"},
-]
+
+[extras]
+pg = ["psycopg2-binary"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = ">=3.8,<4"
+content-hash = "a8b2e2da8d40ad1e81a156948e156b85f3263bf8af167f9065d4aa5c6c887400"
diff --git a/pyproject.toml b/pyproject.toml
index 55b99a1..65ecd47 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,12 +10,13 @@ repository = "https://github.com/djrobstep/migra"
 homepage = "https://databaseci.com/docs/migra"
 
 [tool.poetry.dependencies]
-python = ">=3.7,<4"
+python = ">=3.8,<4"
 sqlbag = "*"
 six = "*"
-# schemainspect = {path="../schemainspect", develop=true}
-schemainspect = ">=3.1.1663480743"
+#schemainspect = { path = "../schemainspect", develop = true }
+schemainspect = { git = "https://github.com/joshainglis/schemainspect.git", rev = "eeda5c18d26fce006a826cfe63f8683b4490a321" }
 psycopg2-binary = { version="*", optional = true }
+networkx = "^3.1"
 
 [tool.poetry.dev-dependencies]
 sqlbag = "*"