diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8ce62a4d..2e5ba3f7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -86,7 +86,11 @@ jobs:
 
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.x'
+          python-version: '3.7'
+
+      - uses: abatilo/actions-poetry@v2.0.0
+        with:
+          poetry-version: 1.1.6
 
       - uses: actions/setup-haskell@v1
         id: setup-haskell
@@ -300,7 +304,12 @@ jobs:
       - if: matrix.image == 'ghcr.io/galoisinc/cryptol-remote-api'
         uses: actions/setup-python@v2
         with:
-          python-version: '3.x'
+          python-version: '3.7'
+
+      - if: matrix.image == 'ghcr.io/galoisinc/cryptol-remote-api'
+        uses: abatilo/actions-poetry@v2.0.0
+        with:
+          poetry-version: 1.1.6
 
       - if: matrix.image == 'ghcr.io/galoisinc/cryptol-remote-api'
         name: Test cryptol-remote-api
diff --git a/cryptol-remote-api/python/README.md b/cryptol-remote-api/python/README.md
index 8af5045f..5ab0c0b4 100644
--- a/cryptol-remote-api/python/README.md
+++ b/cryptol-remote-api/python/README.md
@@ -38,7 +38,7 @@ $ docker run --name=cryptol-remote-api -d \
   ghcr.io/galoisinc/cryptol-remote-api:nightly-portable
 $ export CRYPTOL_SERVER_URL="http://localhost:8080/"
 ```
-6. Install the Python client (requires Python v3.8 or newer -- we recommend using [`poetry`](https://python-poetry.org/docs/#installation) to install the package):
+6. Install the Python client (requires Python v3.7 or newer -- we recommend using [`poetry`](https://python-poetry.org/docs/#installation) to install the package):
 ```
 $ poetry install 
 ```
@@ -151,7 +151,7 @@ configured properly) should then appear as `cryptol-remote-api` in a user's `PAT
 # Running Python Cryptol scripts
 
 Once the server is setup and any path variables are setup as desired, the
-Python (>= v3.8) client can be installed using
+Python (>= v3.7) client can be installed using
 [`poetry`](https://python-poetry.org/docs/#installation) as follows:
 
 ```
diff --git a/cryptol-remote-api/python/cryptol/bitvector.py b/cryptol-remote-api/python/cryptol/bitvector.py
index 3807bca1..424645ab 100644
--- a/cryptol-remote-api/python/cryptol/bitvector.py
+++ b/cryptol-remote-api/python/cryptol/bitvector.py
@@ -124,7 +124,7 @@ class BV:
                 ``others`` in order on the right.
         """
         return reduce(lambda acc, b: acc.__concat_single(b), others, self)
-    
+
     @staticmethod
     def join(*bs : 'BV') -> 'BV':
         """Concatenate the given ``BV``s in order.
@@ -178,6 +178,10 @@ class BV:
         """Equivalent to ``self.value()``."""
         return self.__value
 
+    def __int__(self) -> int:
+        """Equivalent to ``self.value()``."""
+        return self.__value
+
     def __len__(self) -> int:
         """Equivalent to ``self.size()``."""
         return self.__size
@@ -190,7 +194,7 @@ class BV:
 
     def split(self, size : int) -> List['BV']:
         """Split ``self`` into a list of ``BV``s of length ``size``.
-        
+
         :param size: Size of segments to partition ``self`` into (must evently divide ``self.size()``).
         """
         if not isinstance(size, int) or size <= 0:
@@ -209,7 +213,7 @@ class BV:
     @staticmethod
     def from_bytes(bs : bytes, *, size : Optional[int] =None, byteorder : str ='big') -> 'BV':
         """Convert the given bytes ``bs`` into a ``BV``.
-        
+
         :param bs: Bytes to convert to a ``BV``.
         :param size, optional: Desired ``BV``'s size (must be large enough to represent ``bs``). The
             default (i.e., ``None``) will result in a ``BV`` of size ``len(bs) * 8``.
diff --git a/cryptol-remote-api/python/cryptol/connection.py b/cryptol-remote-api/python/cryptol/connection.py
index 2ca6563b..29c17400 100644
--- a/cryptol-remote-api/python/cryptol/connection.py
+++ b/cryptol-remote-api/python/cryptol/connection.py
@@ -51,14 +51,31 @@ def connect(command : Optional[str]=None,
         if url is not None:
             raise ValueError("A Cryptol server URL cannot be specified with a command currently.")
         c = CryptolConnection(command, cryptol_path)
-    elif url is not None:
+    # User-passed url?
+    if c is None and url is not None:
         c = CryptolConnection(ServerConnection(HttpProcess(url)), cryptol_path)
-    elif (command := os.getenv('CRYPTOL_SERVER')) is not None and (command := find_executable(command)) is not None:
-        c = CryptolConnection(command+" socket", cryptol_path=cryptol_path)
-    elif (url := os.getenv('CRYPTOL_SERVER_URL')) is not None:
-        c = CryptolConnection(ServerConnection(HttpProcess(url)), cryptol_path)
-    elif (command := find_executable('cryptol-remote-api')) is not None:
-        c = CryptolConnection(command+" socket", cryptol_path=cryptol_path)
+    # Check `CRYPTOL_SERVER` env var if no connection identified yet
+    if c is None:
+        command = os.getenv('CRYPTOL_SERVER')
+        if command is not None:
+            command = find_executable(command)
+            if command is not None:
+                c = CryptolConnection(command+" socket", cryptol_path=cryptol_path)
+    # Check `CRYPTOL_SERVER_URL` env var if no connection identified yet
+    if c is None:
+        url = os.getenv('CRYPTOL_SERVER_URL')
+        if url is not None:
+            c = CryptolConnection(ServerConnection(HttpProcess(url)), cryptol_path)
+    # Check if `cryptol-remote-api` is in the PATH if no connection identified yet
+    if c is None:
+        command = find_executable('cryptol-remote-api')
+        if command is not None:
+            c = CryptolConnection(command+" socket", cryptol_path=cryptol_path)
+    # Raise an error if still no connection identified yet
+    if c is not None:
+        if reset_server:
+            CryptolResetServer(c)
+        return c
     else:
         raise ValueError(
             """cryptol.connect requires one of the following:",
@@ -66,9 +83,7 @@ def connect(command : Optional[str]=None,
                2) a URL to connect to a running cryptol server is provided via the `url` keyword argument,
                3) the environment variable `CRYPTOL_SERVER` must refer to a valid server executable, or
                4) the environment variable `CRYPTOL_SERVER_URL` must refer to the URL of a running cryptol server.""")
-    if reset_server:
-        CryptolResetServer(c)
-    return c
+
 
 
 def connect_stdio(command : str, cryptol_path : Optional[str] = None) -> CryptolConnection:
@@ -102,7 +117,7 @@ class CryptolConnection:
     proc: ServerProcess
 
     def __init__(self,
-                command_or_connection : Union[str, ServerConnection, ServerProcess], 
+                command_or_connection : Union[str, ServerConnection, ServerProcess],
                 cryptol_path : Optional[str] = None) -> None:
         self.most_recent_result = None
         if isinstance(command_or_connection, ServerProcess):
diff --git a/cryptol-remote-api/python/poetry.lock b/cryptol-remote-api/python/poetry.lock
index ef8c7e20..e9f73fca 100644
--- a/cryptol-remote-api/python/poetry.lock
+++ b/cryptol-remote-api/python/poetry.lock
@@ -86,7 +86,7 @@ socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
 name = "typed-ast"
-version = "1.4.2"
+version = "1.4.3"
 description = "a fork of Python 2 and 3 ast modules with type comment support"
 category = "main"
 optional = false
@@ -94,7 +94,7 @@ python-versions = "*"
 
 [[package]]
 name = "typing-extensions"
-version = "3.7.4.3"
+version = "3.10.0.0"
 description = "Backported and Experimental Type Hints for Python 3.5+"
 category = "main"
 optional = false
@@ -102,21 +102,20 @@ python-versions = "*"
 
 [[package]]
 name = "urllib3"
-version = "1.26.4"
+version = "1.22"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 category = "main"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+python-versions = "*"
 
 [package.extras]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
-brotli = ["brotlipy (>=0.6.0)"]
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.8"
-content-hash = "3a5d27a6af34508eb18ba18ece3a04240e86bba677b152d4a679010a33173935"
+python-versions = ">=3.7.0"
+content-hash = "41e923e3f418b73af25a9f5557564c8efe79b24ec779a875d706963648aa762d"
 
 [metadata.files]
 argo-client = [
@@ -171,43 +170,43 @@ requests = [
     {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
 ]
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-    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
+    {file = "typing_extensions-3.10.0.0-py2-none-any.whl", hash = "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497"},
+    {file = "typing_extensions-3.10.0.0-py3-none-any.whl", hash = "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"},
+    {file = "typing_extensions-3.10.0.0.tar.gz", hash = "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342"},
 ]
 urllib3 = [
-    {file = "urllib3-1.26.4-py2.py3-none-any.whl", hash = "sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df"},
-    {file = "urllib3-1.26.4.tar.gz", hash = "sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937"},
+    {file = "urllib3-1.22-py2.py3-none-any.whl", hash = "sha256:06330f386d6e4b195fbfc736b297f58c5a892e4440e54d294d7004e3a9bbea1b"},
+    {file = "urllib3-1.22.tar.gz", hash = "sha256:cc44da8e1145637334317feebd728bd869a35285b93cbb4cca2577da7e62db4f"},
 ]
diff --git a/cryptol-remote-api/python/pyproject.toml b/cryptol-remote-api/python/pyproject.toml
index 75e3cc6f..8d5bea05 100644
--- a/cryptol-remote-api/python/pyproject.toml
+++ b/cryptol-remote-api/python/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cryptol"
-version = "2.11.0"
+version = "2.11.1"
 readme = "README.md"
 keywords = ["cryptography", "verification"]
 description = "Cryptol client for the Cryptol 2.11 RPC server"
@@ -12,7 +12,7 @@ include = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = ">=3.7.0"
 requests = "^2.25.1"
 BitVector = "^3.4.9"
 argo-client = "0.0.4"
diff --git a/cryptol-remote-api/python/requirements.txt b/cryptol-remote-api/python/requirements.txt
deleted file mode 100644
index 78843830..00000000
--- a/cryptol-remote-api/python/requirements.txt
+++ /dev/null
@@ -1,81 +0,0 @@
-argo-client==0.0.4; python_version >= "3.7" \
-    --hash=sha256:1ce6af1cbc738d08348dcb62d573968da58e2382cb4ea753cc061aa16d45ff6a \
-    --hash=sha256:74c13e9f3bf5a48eeda847af343bdaf54a950c100496ed3c342a51f5406cf568
-bitvector==3.4.9 \
-    --hash=sha256:a5e94cbb4804213b1f0c32d84517cd8f0bb8c689b5eb8055d351632e220a5edd
-certifi==2020.12.5; python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.7" \
-    --hash=sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830 \
-    --hash=sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c
-chardet==4.0.0; python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.7" \
-    --hash=sha256:f864054d66fd9118f2e67044ac8981a54775ec5b67aed0441892edb553d21da5 \
-    --hash=sha256:0d6f53a15db4120f2b08c94f11e7d93d2c911ee118b6b30a04ec3ee8310179fa
-idna==2.10; python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.7" \
-    --hash=sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0 \
-    --hash=sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6
-mypy-extensions==0.4.3; python_version >= "3.7" \
-    --hash=sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d \
-    --hash=sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8
-mypy==0.812; python_version >= "3.5" \
-    --hash=sha256:a26f8ec704e5a7423c8824d425086705e381b4f1dfdef6e3a1edab7ba174ec49 \
-    --hash=sha256:28fb5479c494b1bab244620685e2eb3c3f988d71fd5d64cc753195e8ed53df7c \
-    --hash=sha256:9743c91088d396c1a5a3c9978354b61b0382b4e3c440ce83cf77994a43e8c521 \
-    --hash=sha256:d7da2e1d5f558c37d6e8c1246f1aec1e7349e4913d8fb3cb289a35de573fe2eb \
-    --hash=sha256:4eec37370483331d13514c3f55f446fc5248d6373e7029a29ecb7b7494851e7a \
-    --hash=sha256:d65cc1df038ef55a99e617431f0553cd77763869eebdf9042403e16089fe746c \
-    --hash=sha256:61a3d5b97955422964be6b3baf05ff2ce7f26f52c85dd88db11d5e03e146a3a6 \
-    --hash=sha256:25adde9b862f8f9aac9d2d11971f226bd4c8fbaa89fb76bdadb267ef22d10064 \
-    --hash=sha256:552a815579aa1e995f39fd05dde6cd378e191b063f031f2acfe73ce9fb7f9e56 \
-    --hash=sha256:499c798053cdebcaa916eef8cd733e5584b5909f789de856b482cd7d069bdad8 \
-    --hash=sha256:5873888fff1c7cf5b71efbe80e0e73153fe9212fafdf8e44adfe4c20ec9f82d7 \
-    --hash=sha256:9f94aac67a2045ec719ffe6111df543bac7874cee01f41928f6969756e030564 \
-    --hash=sha256:d23e0ea196702d918b60c8288561e722bf437d82cb7ef2edcd98cfa38905d506 \
-    --hash=sha256:674e822aa665b9fd75130c6c5f5ed9564a38c6cea6a6432ce47eafb68ee578c5 \
-    --hash=sha256:abf7e0c3cf117c44d9285cc6128856106183938c68fd4944763003decdcfeb66 \
-    --hash=sha256:0d0a87c0e7e3a9becdfbe936c981d32e5ee0ccda3e0f07e1ef2c3d1a817cf73e \
-    --hash=sha256:7ce3175801d0ae5fdfa79b4f0cfed08807af4d075b402b7e294e6aa72af9aa2a \
-    --hash=sha256:b09669bcda124e83708f34a94606e01b614fa71931d356c1f1a5297ba11f110a \
-    --hash=sha256:33f159443db0829d16f0a8d83d94df3109bb6dd801975fe86bacb9bf71628e97 \
-    --hash=sha256:3f2aca7f68580dc2508289c729bd49ee929a436208d2b2b6aab15745a70a57df \
-    --hash=sha256:2f9b3407c58347a452fc0736861593e105139b905cca7d097e413453a1d650b4 \
-    --hash=sha256:cd07039aa5df222037005b08fbbfd69b3ab0b0bd7a07d7906de75ae52c4e3119
-requests==2.25.1; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.5.0") \
-    --hash=sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e \
-    --hash=sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804
-typed-ast==1.4.2; python_version >= "3.7" \
-    --hash=sha256:7703620125e4fb79b64aa52427ec192822e9f45d37d4b6625ab37ef403e1df70 \
-    --hash=sha256:c9aadc4924d4b5799112837b226160428524a9a45f830e0d0f184b19e4090487 \
-    --hash=sha256:9ec45db0c766f196ae629e509f059ff05fc3148f9ffd28f3cfe75d4afb485412 \
-    --hash=sha256:85f95aa97a35bdb2f2f7d10ec5bbdac0aeb9dafdaf88e17492da0504de2e6400 \
-    --hash=sha256:9044ef2df88d7f33692ae3f18d3be63dec69c4fb1b5a4a9ac950f9b4ba571606 \
-    --hash=sha256:c1c876fd795b36126f773db9cbb393f19808edd2637e00fd6caba0e25f2c7b64 \
-    --hash=sha256:5dcfc2e264bd8a1db8b11a892bd1647154ce03eeba94b461effe68790d8b8e07 \
-    --hash=sha256:8db0e856712f79c45956da0c9a40ca4246abc3485ae0d7ecc86a20f5e4c09abc \
-    --hash=sha256:d003156bb6a59cda9050e983441b7fa2487f7800d76bdc065566b7d728b4581a \
-    --hash=sha256:4c790331247081ea7c632a76d5b2a265e6d325ecd3179d06e9cf8d46d90dd151 \
-    --hash=sha256:d175297e9533d8d37437abc14e8a83cbc68af93cc9c1c59c2c292ec59a0697a3 \
-    --hash=sha256:cf54cfa843f297991b7388c281cb3855d911137223c6b6d2dd82a47ae5125a41 \
-    --hash=sha256:b4fcdcfa302538f70929eb7b392f536a237cbe2ed9cba88e3bf5027b39f5f77f \
-    --hash=sha256:987f15737aba2ab5f3928c617ccf1ce412e2e321c77ab16ca5a293e7bbffd581 \
-    --hash=sha256:37f48d46d733d57cc70fd5f30572d11ab8ed92da6e6b28e024e4a3edfb456e37 \
-    --hash=sha256:36d829b31ab67d6fcb30e185ec996e1f72b892255a745d3a82138c97d21ed1cd \
-    --hash=sha256:8368f83e93c7156ccd40e49a783a6a6850ca25b556c0fa0240ed0f659d2fe496 \
-    --hash=sha256:963c80b583b0661918718b095e02303d8078950b26cc00b5e5ea9ababe0de1fc \
-    --hash=sha256:e683e409e5c45d5c9082dc1daf13f6374300806240719f95dc783d1fc942af10 \
-    --hash=sha256:84aa6223d71012c68d577c83f4e7db50d11d6b1399a9c779046d75e24bed74ea \
-    --hash=sha256:a38878a223bdd37c9709d07cd357bb79f4c760b29210e14ad0fb395294583787 \
-    --hash=sha256:a2c927c49f2029291fbabd673d51a2180038f8cd5a5b2f290f78c4516be48be2 \
-    --hash=sha256:c0c74e5579af4b977c8b932f40a5464764b2f86681327410aa028a22d2f54937 \
-    --hash=sha256:07d49388d5bf7e863f7fa2f124b1b1d89d8aa0e2f7812faff0a5658c01c59aa1 \
-    --hash=sha256:240296b27397e4e37874abb1df2a608a92df85cf3e2a04d0d4d61055c8305ba6 \
-    --hash=sha256:d746a437cdbca200622385305aedd9aef68e8a645e385cc483bdc5e488f07166 \
-    --hash=sha256:14bf1522cdee369e8f5581238edac09150c765ec1cb33615855889cf33dcb92d \
-    --hash=sha256:cc7b98bf58167b7f2db91a4327da24fb93368838eb84a44c472283778fc2446b \
-    --hash=sha256:7147e2a76c75f0f64c4319886e7639e490fee87c9d25cb1d4faef1d8cf83a440 \
-    --hash=sha256:9fc0b3cb5d1720e7141d103cf4819aea239f7d136acf9ee4a69b047b7986175a
-typing-extensions==3.7.4.3; python_version >= "3.7" \
-    --hash=sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f \
-    --hash=sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918 \
-    --hash=sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c
-urllib3==1.26.4; python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version < "4" and python_version >= "3.7" \
-    --hash=sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df \
-    --hash=sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937
diff --git a/cryptol-remote-api/python/setup.py b/cryptol-remote-api/python/setup.py
deleted file mode 100644
index b7a9757c..00000000
--- a/cryptol-remote-api/python/setup.py
+++ /dev/null
@@ -1,44 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from setuptools import setup
-
-def get_README():
-    content = ""
-    with open("README.md") as f:
-        content += f.read()
-    return content
-
-setup(
-    name="cryptol",
-    python_requires=">=3.7",
-    version="0.0.2",
-    url="https://github.com/GaloisInc/cryptol",
-    project_urls={
-        "Source": "https://github.com/GaloisInc/cryptol/tree/master/cryptol-remote-api/pthon",
-        "Bug Tracker": "https://github.com/GaloisInc/cryptol/issues"
-    },
-    license="BSD",
-    description="A scripting library for interacting with the Cryptol RPC server.",
-    long_description=get_README(),
-    long_description_content_type="text/markdown",
-    author="Galois, Inc.",
-    author_email="andrew@galois.com",
-    packages=["cryptol"],
-    package_data={"cryptol": ["py.typed"]},
-    zip_safe=False,
-    install_requires=[
-        "BitVector==3.4.9",
-        "mypy==0.812",
-        "mypy-extensions==0.4.3",
-        "argo-client==0.0.4"
-    ],
-    classifiers=[
-        "Development Status :: 3 - Alpha",
-        "License :: OSI Approved :: BSD License",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9"
-    ],
-)
diff --git a/cryptol-remote-api/python/tests/cryptol/test_EvenMansour.py b/cryptol-remote-api/python/tests/cryptol/test_EvenMansour.py
index e894a5f7..a87dc9db 100644
--- a/cryptol-remote-api/python/tests/cryptol/test_EvenMansour.py
+++ b/cryptol-remote-api/python/tests/cryptol/test_EvenMansour.py
@@ -10,17 +10,17 @@ class TestEvenMansour(unittest.TestCase):
     def test_EvenMansour(self):
         c = cryptol.connect()
         c.load_file(str(Path('tests','cryptol','test-files','examples','contrib','EvenMansour.cry')))
-                
+
         F_10_4 = c.eval('F:[10][4]').result()
         self.assertTrue(c.call('is_a_permutation', F_10_4).result())
-        
+
         Finv_10_4 = c.eval("F':[10][4]").result()
         digits = [ BV(size=4, value=i) for i in range(0,10) ]
                  # ^ the same as: c.eval('[0..9]:[_][4]').result()
         self.assertTrue(c.call('is_inverse_permutation', digits, F_10_4, Finv_10_4).result())
-        
+
         self.assertTrue(c.check('E_and_D_are_inverses').result().success)
-        
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/cryptol-remote-api/python/tests/cryptol/test_cryptol_api.py b/cryptol-remote-api/python/tests/cryptol/test_cryptol_api.py
index 208fb7cd..d154878a 100644
--- a/cryptol-remote-api/python/tests/cryptol/test_cryptol_api.py
+++ b/cryptol-remote-api/python/tests/cryptol/test_cryptol_api.py
@@ -166,27 +166,33 @@ class HttpMultiConnectionTests(unittest.TestCase):
 
     @classmethod
     def setUpClass(self):
-        if (url := os.getenv('CRYPTOL_SERVER_URL')) is not None:
-            self.url = url
-        elif ((command := os.getenv('CRYPTOL_SERVER')) is not None and (command := find_executable(command)) is not None)\
-              or (command := find_executable('cryptol-remote-api')) is not None:
-            self.p = subprocess.Popen(
-                [command, "http", "/", "--port", "8080"],
-                stdout=subprocess.PIPE,
-                stdin=subprocess.DEVNULL,
-                stderr=subprocess.PIPE,
-                start_new_session=True)
-            time.sleep(5)
-            assert(self.p is not None)
-            poll_result = self.p.poll()
-            if poll_result is not None:
-                print(poll_result)
-                print(self.p.stdout.read())
-                print(self.p.stderr.read())
-            assert(poll_result is None)
-            self.url = "http://localhost:8080/"
+        server = os.getenv('CRYPTOL_SERVER_URL')
+        if server is not None:
+            self.url = server
         else:
-            raise RuntimeError("NO CRYPTOL SERVER FOUND")
+            server = os.getenv('CRYPTOL_SERVER')
+            if server is not None:
+                server = find_executable(server)
+            if server is None:
+                server = find_executable('cryptol-remote-api')
+            if server is not None:
+                self.p = subprocess.Popen(
+                    [server, "http", "/", "--port", "8080"],
+                    stdout=subprocess.PIPE,
+                    stdin=subprocess.DEVNULL,
+                    stderr=subprocess.PIPE,
+                    start_new_session=True)
+                time.sleep(5)
+                assert(self.p is not None)
+                poll_result = self.p.poll()
+                if poll_result is not None:
+                    print(poll_result)
+                    print(self.p.stdout.read())
+                    print(self.p.stderr.read())
+                assert(poll_result is None)
+                self.url = "http://localhost:8080/"
+            else:
+                raise RuntimeError("NO CRYPTOL SERVER FOUND")
 
     @classmethod
     def tearDownClass(self):
diff --git a/cryptol-remote-api/python/tests/cryptol/test_low_level_ops.py b/cryptol-remote-api/python/tests/cryptol/test_low_level_ops.py
index ead9a93a..82d6f7e6 100644
--- a/cryptol-remote-api/python/tests/cryptol/test_low_level_ops.py
+++ b/cryptol-remote-api/python/tests/cryptol/test_low_level_ops.py
@@ -36,14 +36,23 @@ class LowLevelCryptolApiTests(unittest.TestCase):
 
     @classmethod
     def setUpClass(self):
-        if (command := os.getenv('CRYPTOL_SERVER')) is not None and (command := find_executable(command)) is not None:
-            self.c = argo.ServerConnection(argo.DynamicSocketProcess(command + " socket"))
-        elif (url := os.getenv('CRYPTOL_SERVER_URL')) is not None:
-            self.c = argo.ServerConnection(argo.HttpProcess(url))
-        elif (command := find_executable('cryptol-remote-api')) is not None:
-            self.c = argo.ServerConnection(argo.StdIOProcess(command + " stdio"))
+        server = os.getenv('CRYPTOL_SERVER')
+        if server:
+            server = find_executable(server)
+            if server:
+                self.c = argo.ServerConnection(argo.DynamicSocketProcess(server + " socket"))
+            else:
+                raise RuntimeError(f'CRYPTOL_SERVER executable {server} could not be found')
         else:
-            raise RuntimeError("NO CRYPTOL SERVER FOUND")
+            server = os.getenv('CRYPTOL_SERVER_URL')
+            if server:
+                self.c = argo.ServerConnection(argo.HttpProcess(server))
+            else:
+                server = find_executable('cryptol-remote-api')
+                if server:
+                    self.c = argo.ServerConnection(argo.StdIOProcess(server + " stdio"))
+                else:
+                    raise RuntimeError("NO CRYPTOL SERVER FOUND")
 
     def test_low_level_api(self):
         c = self.c
@@ -54,7 +63,7 @@ class LowLevelCryptolApiTests(unittest.TestCase):
         self.assertIn('state', reply['result'])
         self.assertIn('answer', reply['result'])
         state = reply['result']['state']
- 
+
         uid = c.send_command("evaluate expression", {"expression": {"expression":"call","function":"f","arguments":[{"expression":"bits","encoding":"hex","data":"ff","width":8}]}, "state": state})
         reply = c.wait_for_reply_to(uid)
         self.assertIn('result', reply)
diff --git a/cryptol-remote-api/python/tests/cryptol_eval/test_basics.py b/cryptol-remote-api/python/tests/cryptol_eval/test_basics.py
index a3293244..731a6f56 100644
--- a/cryptol-remote-api/python/tests/cryptol_eval/test_basics.py
+++ b/cryptol-remote-api/python/tests/cryptol_eval/test_basics.py
@@ -16,8 +16,9 @@ class CryptolEvalServerTests(unittest.TestCase):
     @classmethod
     def setUpClass(self):
         dir_path = Path(os.path.dirname(os.path.realpath(__file__)), "test-files")
-        if command := os.getenv('CRYPTOL_SERVER'):
-            self.c = cryptol.connect(f'{command} socket --module M', cryptol_path=dir_path)
+        server = os.getenv('CRYPTOL_SERVER')
+        if server:
+            self.c = cryptol.connect(f'{server} socket --module M', cryptol_path=dir_path)
         else:
             raise ValueError('CRYPTOL_SERVER environment variable not set (eval server tests currently only work with a local executable)')
 
@@ -58,12 +59,16 @@ class HttpMultiConnectionTests(unittest.TestCase):
     @classmethod
     def setUpClass(self):
         dir_path = Path(os.path.dirname(os.path.realpath(__file__)), "test-files")
-        if ((command := os.getenv('CRYPTOL_SERVER')) is not None and (command := find_executable(command)) is not None)\
-              or (command := find_executable('cryptol-eval-server')) is not None:
+        server = os.getenv('CRYPTOL_SERVER')
+        if server is not None:
+            server = find_executable(server)
+        if server is None:
+            server = find_executable('cryptol-eval-server')
+        if server is not None:
             new_env = os.environ.copy()
             new_env["CRYPTOLPATH"] = str(dir_path)
             self.p = subprocess.Popen(
-                [command, "http", "/", "--port", "8081", "--module", "M"],
+                [server, "http", "/", "--port", "8081", "--module", "M"],
                 stdout=subprocess.PIPE,
                 stdin=subprocess.DEVNULL,
                 stderr=subprocess.PIPE,
diff --git a/cryptol-remote-api/run_rpc_tests.sh b/cryptol-remote-api/run_rpc_tests.sh
index d6e8bc0a..539be453 100755
--- a/cryptol-remote-api/run_rpc_tests.sh
+++ b/cryptol-remote-api/run_rpc_tests.sh
@@ -10,27 +10,22 @@ cabal v2-build exe:cryptol-eval-server
 pushd $DIR/python
 
 NUM_FAILS=0
+function run_test {
+    "$@"
+    if (( $? != 0 )); then NUM_FAILS=$(($NUM_FAILS+1)); fi
+}
 
 echo "Setting up python environment for remote server clients..."
-python3 -m venv virtenv
-. virtenv/bin/activate
-pip install -r requirements.txt
+poetry install
 
 echo "Typechecking code with mypy..."
-mypy cryptol/ tests/
-if [ $? -ne 0 ]; then
-  echo "Code failed to typecheck with mypy"
-  NUM_FAILS=$(($NUM_FAILS+1))
-fi
+run_test poetry run mypy cryptol/ tests/
 
 export CRYPTOL_SERVER=$(cabal v2-exec which cryptol-remote-api)
 if [[ -x "$CRYPTOL_SERVER" ]]; then
   echo "Running cryptol-remote-api tests..."
   echo "Using server $CRYPTOL_SERVER"
-  python3 -m unittest discover tests/cryptol
-  if [ $? -ne 0 ]; then
-      NUM_FAILS=$(($NUM_FAILS+1))
-  fi
+  run_test poetry run python -m unittest discover tests/cryptol
 else
   echo "could not find the cryptol-remote-api via `cabal v2-exec which`"
   NUM_FAILS=$(($NUM_FAILS+1))
@@ -40,10 +35,7 @@ export CRYPTOL_SERVER=$(cabal v2-exec which cryptol-eval-server)
 if [[ -x "$CRYPTOL_SERVER" ]]; then
   echo "Running cryptol-eval-server tests..."
   echo "Using server $CRYPTOL_SERVER"
-  python3 -m unittest discover tests/cryptol_eval
-  if [ $? -ne 0 ]; then
-      NUM_FAILS=$(($NUM_FAILS+1))
-  fi
+  run_test poetry run python -m unittest discover tests/cryptol_eval
 else
   echo "could not find the cryptol-eval-server via `cabal v2-exec which`"
   NUM_FAILS=$(($NUM_FAILS+1))
diff --git a/cryptol-remote-api/test-cryptol-remote-api.py b/cryptol-remote-api/test-cryptol-remote-api.py
index fa086048..a0fbb432 100644
--- a/cryptol-remote-api/test-cryptol-remote-api.py
+++ b/cryptol-remote-api/test-cryptol-remote-api.py
@@ -9,7 +9,7 @@ port = int(sys.argv[3])
 if connType == 'socket':
     c = cryptol.connect(argo.RemoteSocketProcess(host, port=port, ipv6=False))
 elif connType == 'http':
-    c = cryptol.CryptolConnection(argo.ServerConnection(argo.HttpProcess(url="http://%s:%d/" % (host,port))))
+    c = cryptol.connect(url="http://%s:%d/" % (host,port))
 else:
     raise Exception('specify socket or http for connection type')
 
diff --git a/cryptol-remote-api/test.Dockerfile b/cryptol-remote-api/test.Dockerfile
index 78fc1254..1ec2cdff 100644
--- a/cryptol-remote-api/test.Dockerfile
+++ b/cryptol-remote-api/test.Dockerfile
@@ -1,8 +1,9 @@
-FROM python:3.9
+FROM python:3.7
 # Intended to be built from the root of the cryptol git repository
 
 COPY cryptol-remote-api/python python
-RUN pip3 install -r python/requirements.txt
-RUN pip3 install -e python
-COPY cryptol-remote-api/test-cryptol-remote-api.py /entrypoint.py
-ENTRYPOINT ["python3", "/entrypoint.py"]
+RUN pip3 install 'poetry==1.1.5'
+RUN cd python && poetry install
+COPY cryptol-remote-api/test-cryptol-remote-api.py /python/entrypoint.py
+WORKDIR /python
+ENTRYPOINT ["poetry", "run", "python","entrypoint.py"]
diff --git a/cryptol-remote-api/test_docker.sh b/cryptol-remote-api/test_docker.sh
index 5106bd62..2f70a265 100755
--- a/cryptol-remote-api/test_docker.sh
+++ b/cryptol-remote-api/test_docker.sh
@@ -23,12 +23,10 @@ pushd $DIR/python
 NUM_FAILS=0
 
 echo "Setting up python environment for remote server clients..."
-python3 -m venv virtenv
-. virtenv/bin/activate
-pip install -r requirements.txt
+poetry install
 
 export CRYPTOL_SERVER_URL="http://localhost:8080/"
-python3 -m unittest discover tests/cryptol
+poetry run python -m unittest discover tests/cryptol
 if [ $? -ne 0 ]; then
     NUM_FAILS=$(($NUM_FAILS+1))
 fi