diff --git a/ethpm_cli/_utils/ipfs.py b/ethpm_cli/_utils/ipfs.py
index 83c2545..de41a64 100644
--- a/ethpm_cli/_utils/ipfs.py
+++ b/ethpm_cli/_utils/ipfs.py
@@ -1,7 +1,7 @@
 from ethpm.backends.ipfs import BaseIPFSBackend, InfuraIPFSBackend, LocalIPFSBackend
 
 
-def get_ipfs_backend(ipfs: bool = None) -> BaseIPFSBackend:
+def get_ipfs_backend(ipfs: bool = False) -> BaseIPFSBackend:
     if ipfs:
         return LocalIPFSBackend()
     return InfuraIPFSBackend()
diff --git a/ethpm_cli/_utils/terminal.py b/ethpm_cli/_utils/terminal.py
deleted file mode 100644
index 9d15f26..0000000
--- a/ethpm_cli/_utils/terminal.py
+++ /dev/null
@@ -1,10 +0,0 @@
-import os
-import sys
-
-
-def get_terminal_width() -> int:
-    if sys.stdin.isatty():
-        _, columns = os.popen("stty size", "r").read().split()
-    else:
-        columns = "100"
-    return int(columns)
diff --git a/ethpm_cli/config.py b/ethpm_cli/config.py
index ddda78b..2fc8964 100644
--- a/ethpm_cli/config.py
+++ b/ethpm_cli/config.py
@@ -13,7 +13,11 @@ class Config:
     """
 
     def __init__(self, args: Namespace) -> None:
-        self.ipfs_backend = get_ipfs_backend(args.local_ipfs)
+        if "local_ipfs" in args:
+            self.ipfs_backend = get_ipfs_backend(args.local_ipfs)
+        else:
+            self.ipfs_backend = get_ipfs_backend()
+
         if args.ethpm_dir is None:
             self.ethpm_dir = Path.cwd() / ETHPM_DIR_NAME
             if not self.ethpm_dir.is_dir():
diff --git a/ethpm_cli/constants.py b/ethpm_cli/constants.py
index ccf5c36..077f026 100644
--- a/ethpm_cli/constants.py
+++ b/ethpm_cli/constants.py
@@ -4,9 +4,12 @@
 
 from ethpm_cli import CLI_ASSETS_DIR
 
-ETHPM_DIR_NAME = "ethpm_packages"
-ETHPM_ASSETS_DIR = "packages"
+ETHPM_DIR_NAME = "_ethpm_packages"
 IPFS_ASSETS_DIR = "ipfs"
+LOCKFILE_NAME = "ethpm.lock"
+SRC_DIR_NAME = "_src"
+
+
 VERSION_RELEASE_ABI = json.loads((CLI_ASSETS_DIR / "1.0.1.json").read_text())[
     "contract_types"
 ]["Log"]["abi"]
diff --git a/ethpm_cli/install.py b/ethpm_cli/install.py
index 6d982ed..1d938d0 100644
--- a/ethpm_cli/install.py
+++ b/ethpm_cli/install.py
@@ -1,20 +1,18 @@
-from collections import namedtuple
 import json
 import logging
 import os
 from pathlib import Path
 import shutil
 import tempfile
-from typing import Any, Dict, Iterable, Tuple
+from typing import Any, Dict, Iterable, NamedTuple, Tuple
 
-from eth_utils import to_dict, to_list, to_text
+from eth_utils import to_dict, to_text, to_tuple
 from eth_utils.toolz import assoc, dissoc
 from ethpm.backends.ipfs import BaseIPFSBackend
 from ethpm.utils.ipfs import is_ipfs_uri
 
-from ethpm_cli._utils.terminal import get_terminal_width
 from ethpm_cli.config import Config
-from ethpm_cli.constants import ETHPM_DIR_NAME
+from ethpm_cli.constants import ETHPM_DIR_NAME, LOCKFILE_NAME, SRC_DIR_NAME
 from ethpm_cli.exceptions import InstallError
 from ethpm_cli.package import Package
 from ethpm_cli.validation import validate_parent_directory
@@ -38,19 +36,14 @@ def install_package(pkg: Package, config: Config) -> None:
     dest_pkg_dir = config.ethpm_dir / pkg.alias
     validate_parent_directory(config.ethpm_dir, dest_pkg_dir)
     shutil.copytree(tmp_pkg_dir, dest_pkg_dir)
-    install_to_ethpm_lock(pkg, (config.ethpm_dir / "ethpm.lock"))
+    install_to_ethpm_lock(pkg, (config.ethpm_dir / LOCKFILE_NAME))
 
 
-_InstalledPackageTree = namedtuple(
-    "InstalledPackageTree", "depth path manifest children content_hash"
-)
-
-
-class InstalledPackageTree(_InstalledPackageTree):
+class InstalledPackageTree(NamedTuple):
     depth: int
     path: Path
     manifest: Dict[str, Any]
-    children: Tuple["InstalledPackageTree", ...]
+    children: Tuple[Any, ...]  # Expects InstalledPackageTree
     content_hash: str
 
     @property
@@ -64,23 +57,21 @@ def package_version(self) -> str:
     @property
     def format_for_display(self) -> str:
         prefix = "- " * self.depth
-        columns = get_terminal_width()
-        main_info = f"{prefix}{self.package_name}=={self.package_version}..."
+        main_info = f"{prefix}{self.package_name}=={self.package_version}"
         hash_info = f"({self.content_hash})"
-        diff = columns - len(main_info) - len(hash_info)
         if self.children:
             children = "\n" + "\n".join(
                 (child.format_for_display for child in self.children)
             )
         else:
             children = ""
-        return f"{main_info}{'.' * diff}{hash_info}{children}"
+        return f"{main_info} --- {hash_info}{children}"
 
 
 def list_installed_packages(config: Config) -> None:
     installed_packages = [
         get_installed_package_tree(base_dir)
-        for base_dir in config.ethpm_dir.glob("*/")
+        for base_dir in config.ethpm_dir.iterdir()
         if base_dir.is_dir()
     ]
     for pkg in sorted(installed_packages):
@@ -89,7 +80,7 @@ def list_installed_packages(config: Config) -> None:
 
 def get_installed_package_tree(base_dir: Path, depth: int = 0) -> InstalledPackageTree:
     manifest = json.loads((base_dir / "manifest.json").read_text())
-    ethpm_lock = json.loads((base_dir.parent / "ethpm.lock").read_text())
+    ethpm_lock = json.loads((base_dir.parent / LOCKFILE_NAME).read_text())
     content_hash = ethpm_lock[base_dir.name]["resolved_uri"]
     dependency_dirs = get_dependency_dirs(base_dir)
     children = tuple(
@@ -99,12 +90,12 @@ def get_installed_package_tree(base_dir: Path, depth: int = 0) -> InstalledPacka
     return InstalledPackageTree(depth, base_dir, manifest, children, content_hash)
 
 
-@to_list
+@to_tuple
 def get_dependency_dirs(base_dir: Path) -> Iterable[Path]:
-    dep_dir = base_dir / "ethpm_packages"
+    dep_dir = base_dir / ETHPM_DIR_NAME
     if dep_dir.is_dir():
-        for ddir in dep_dir.glob("*/"):
-            if ddir.is_dir() and ddir.name != "src":
+        for ddir in dep_dir.iterdir():
+            if ddir.is_dir():
                 yield ddir
 
 
@@ -115,13 +106,13 @@ def is_package_installed(package_name: str, config: Config) -> bool:
 def uninstall_package(package_name: str, config: Config) -> None:
     if not is_package_installed(package_name, config):
         raise InstallError(
-            f"Unable to uninstall {package_name} from {config.ethpm_dir}"
+            f"No package with the name {package_name} found installed under {config.ethpm_dir}."
         )
 
-    tmp_pkg_dir = Path(tempfile.mkdtemp()) / "ethpm_packages"
+    tmp_pkg_dir = Path(tempfile.mkdtemp()) / ETHPM_DIR_NAME
     shutil.copytree(config.ethpm_dir, tmp_pkg_dir)
     shutil.rmtree(tmp_pkg_dir / package_name)
-    uninstall_from_ethpm_lock(package_name, (tmp_pkg_dir / "ethpm.lock"))
+    uninstall_from_ethpm_lock(package_name, (tmp_pkg_dir / LOCKFILE_NAME))
 
     shutil.rmtree(config.ethpm_dir)
     tmp_pkg_dir.replace(config.ethpm_dir)
@@ -135,7 +126,7 @@ def write_pkg_installation_files(
 
     write_sources_to_disk(pkg, tmp_pkg_dir, ipfs_backend)
     write_build_deps_to_disk(pkg, tmp_pkg_dir, ipfs_backend)
-    tmp_ethpm_lock = tmp_pkg_dir.parent / "ethpm.lock"
+    tmp_ethpm_lock = tmp_pkg_dir.parent / LOCKFILE_NAME
     install_to_ethpm_lock(pkg, tmp_ethpm_lock)
 
 
@@ -144,12 +135,12 @@ def write_sources_to_disk(
 ) -> None:
     sources = resolve_sources(pkg, ipfs_backend)
     for path, source_contents in sources.items():
-        target_file = pkg_dir / "src" / path
+        target_file = pkg_dir / SRC_DIR_NAME / path
         target_dir = target_file.parent
         if not target_dir.is_dir():
             target_dir.mkdir(parents=True)
         target_file.touch()
-        validate_parent_directory((pkg_dir / "src"), target_file)
+        validate_parent_directory((pkg_dir / SRC_DIR_NAME), target_file)
         target_file.write_text(source_contents)
 
 
@@ -194,4 +185,6 @@ def install_to_ethpm_lock(pkg: Package, ethpm_lock: Path) -> None:
 def uninstall_from_ethpm_lock(package_name: str, ethpm_lock: Path) -> None:
     old_lock = json.loads(ethpm_lock.read_text())
     new_lock = dissoc(old_lock, package_name)
-    ethpm_lock.write_text(f"{json.dumps(new_lock, sort_keys=True, indent=4)}\n")
+    temp_ethpm_lock = Path(tempfile.NamedTemporaryFile().name)
+    temp_ethpm_lock.write_text(f"{json.dumps(new_lock, sort_keys=True, indent=4)}\n")
+    temp_ethpm_lock.replace(ethpm_lock)
diff --git a/ethpm_cli/main.py b/ethpm_cli/main.py
index 13492fb..c3f536d 100644
--- a/ethpm_cli/main.py
+++ b/ethpm_cli/main.py
@@ -12,7 +12,7 @@
 from ethpm_cli.constants import INFURA_HTTP_URI
 from ethpm_cli.install import install_package, list_installed_packages
 from ethpm_cli.package import Package
-from ethpm_cli.parser import get_ethpm_parser
+from ethpm_cli.parser import ETHPM_PARSER
 from ethpm_cli.scraper import scrape
 from ethpm_cli.validation import validate_install_cli_args
 
@@ -50,7 +50,7 @@ def scraper(args: argparse.Namespace) -> None:
 
 def main() -> None:
     logger = setup_cli_logger()
-    parser = get_ethpm_parser()
+    parser = ETHPM_PARSER
     logger.info(f"EthPM CLI v{__version__}\n")
 
     args = parser.parse_args()
diff --git a/ethpm_cli/parser.py b/ethpm_cli/parser.py
index 17228dd..cf34be8 100644
--- a/ethpm_cli/parser.py
+++ b/ethpm_cli/parser.py
@@ -57,3 +57,6 @@ def get_ethpm_parser() -> argparse.ArgumentParser:
         help="Path to specific ethpm_packages dir.",
     )
     return parser
+
+
+ETHPM_PARSER = get_ethpm_parser()
diff --git a/tests/core/assets/multiple/ethpm_packages/ethpm.lock b/tests/core/assets/multiple/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/ethpm.lock
rename to tests/core/assets/multiple/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/multiple/ethpm_packages/owned/src/contracts/Owned.sol b/tests/core/assets/multiple/_ethpm_packages/owned/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/owned/src/contracts/Owned.sol
rename to tests/core/assets/multiple/_ethpm_packages/owned/_src/contracts/Owned.sol
diff --git a/tests/core/assets/multiple/ethpm_packages/owned/manifest.json b/tests/core/assets/multiple/_ethpm_packages/owned/manifest.json
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/owned/manifest.json
rename to tests/core/assets/multiple/_ethpm_packages/owned/manifest.json
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/ethpm.lock b/tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/ethpm.lock
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/owned/src/contracts/Owned.sol b/tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/owned/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/owned/src/contracts/Owned.sol
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/owned/_src/contracts/Owned.sol
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/owned/manifest.json b/tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/owned/manifest.json
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/owned/manifest.json
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/owned/manifest.json
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/safe-math-lib/src/contracts/SafeMathLib.sol b/tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/_src/contracts/SafeMathLib.sol
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/safe-math-lib/src/contracts/SafeMathLib.sol
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/_src/contracts/SafeMathLib.sol
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/safe-math-lib/manifest.json b/tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/manifest.json
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/ethpm_packages/safe-math-lib/manifest.json
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/manifest.json
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/src/contracts/Wallet.sol b/tests/core/assets/multiple/_ethpm_packages/wallet/_src/contracts/Wallet.sol
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/src/contracts/Wallet.sol
rename to tests/core/assets/multiple/_ethpm_packages/wallet/_src/contracts/Wallet.sol
diff --git a/tests/core/assets/multiple/ethpm_packages/wallet/manifest.json b/tests/core/assets/multiple/_ethpm_packages/wallet/manifest.json
similarity index 100%
rename from tests/core/assets/multiple/ethpm_packages/wallet/manifest.json
rename to tests/core/assets/multiple/_ethpm_packages/wallet/manifest.json
diff --git a/tests/core/assets/owned/ipfs_uri/ethpm_packages/ethpm.lock b/tests/core/assets/owned/ipfs_uri/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri/ethpm_packages/ethpm.lock
rename to tests/core/assets/owned/ipfs_uri/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/owned/ipfs_uri/ethpm_packages/owned/src/contracts/Owned.sol b/tests/core/assets/owned/ipfs_uri/_ethpm_packages/owned/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri/ethpm_packages/owned/src/contracts/Owned.sol
rename to tests/core/assets/owned/ipfs_uri/_ethpm_packages/owned/_src/contracts/Owned.sol
diff --git a/tests/core/assets/owned/ipfs_uri/ethpm_packages/owned/manifest.json b/tests/core/assets/owned/ipfs_uri/_ethpm_packages/owned/manifest.json
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri/ethpm_packages/owned/manifest.json
rename to tests/core/assets/owned/ipfs_uri/_ethpm_packages/owned/manifest.json
diff --git a/tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/ethpm.lock b/tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/ethpm.lock
rename to tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/owned-alias/src/contracts/Owned.sol b/tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/owned-alias/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/owned-alias/src/contracts/Owned.sol
rename to tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/owned-alias/_src/contracts/Owned.sol
diff --git a/tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/owned-alias/manifest.json b/tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/owned-alias/manifest.json
similarity index 100%
rename from tests/core/assets/owned/ipfs_uri_alias/ethpm_packages/owned-alias/manifest.json
rename to tests/core/assets/owned/ipfs_uri_alias/_ethpm_packages/owned-alias/manifest.json
diff --git a/tests/core/assets/owned/registry_uri/ethpm_packages/ethpm.lock b/tests/core/assets/owned/registry_uri/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/owned/registry_uri/ethpm_packages/ethpm.lock
rename to tests/core/assets/owned/registry_uri/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/owned/registry_uri/ethpm_packages/owned/src/contracts/Owned.sol b/tests/core/assets/owned/registry_uri/_ethpm_packages/owned/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/owned/registry_uri/ethpm_packages/owned/src/contracts/Owned.sol
rename to tests/core/assets/owned/registry_uri/_ethpm_packages/owned/_src/contracts/Owned.sol
diff --git a/tests/core/assets/owned/registry_uri/ethpm_packages/owned/manifest.json b/tests/core/assets/owned/registry_uri/_ethpm_packages/owned/manifest.json
similarity index 100%
rename from tests/core/assets/owned/registry_uri/ethpm_packages/owned/manifest.json
rename to tests/core/assets/owned/registry_uri/_ethpm_packages/owned/manifest.json
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/ethpm.lock b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/ethpm.lock
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/ethpm.lock b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/ethpm.lock
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/ethpm.lock
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/ethpm.lock
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/owned/src/contracts/Owned.sol b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/owned/_src/contracts/Owned.sol
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/owned/src/contracts/Owned.sol
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/owned/_src/contracts/Owned.sol
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/owned/manifest.json b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/owned/manifest.json
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/owned/manifest.json
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/owned/manifest.json
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/safe-math-lib/src/contracts/SafeMathLib.sol b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/_src/contracts/SafeMathLib.sol
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/safe-math-lib/src/contracts/SafeMathLib.sol
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/_src/contracts/SafeMathLib.sol
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/safe-math-lib/manifest.json b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/manifest.json
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/ethpm_packages/safe-math-lib/manifest.json
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_ethpm_packages/safe-math-lib/manifest.json
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/src/contracts/Wallet.sol b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_src/contracts/Wallet.sol
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/src/contracts/Wallet.sol
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/_src/contracts/Wallet.sol
diff --git a/tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/manifest.json b/tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/manifest.json
similarity index 100%
rename from tests/core/assets/wallet/ipfs_uri/ethpm_packages/wallet/manifest.json
rename to tests/core/assets/wallet/ipfs_uri/_ethpm_packages/wallet/manifest.json
diff --git a/tests/core/conftest.py b/tests/core/conftest.py
index 2d70e2d..b7edfed 100644
--- a/tests/core/conftest.py
+++ b/tests/core/conftest.py
@@ -3,6 +3,8 @@
 
 import pytest
 
+from ethpm_cli.constants import ETHPM_DIR_NAME
+
 ASSETS_DIR = Path(__file__).parent / "assets"
 
 
@@ -13,7 +15,7 @@ def test_assets_dir():
 
 @pytest.fixture
 def owned_pkg_data(test_assets_dir):
-    owned_dir = test_assets_dir / "owned" / "ipfs_uri" / "ethpm_packages" / "owned"
+    owned_dir = test_assets_dir / "owned" / "ipfs_uri" / ETHPM_DIR_NAME / "owned"
     owned_raw_manifest = (owned_dir / "manifest.json").read_bytes()
     return {
         "raw_manifest": owned_raw_manifest,
diff --git a/tests/core/test_install.py b/tests/core/test_install.py
index 02c09c2..6d21f88 100644
--- a/tests/core/test_install.py
+++ b/tests/core/test_install.py
@@ -5,6 +5,7 @@
 import pytest
 
 from ethpm_cli._utils.testing import check_dir_trees_equal
+from ethpm_cli.constants import ETHPM_DIR_NAME
 from ethpm_cli.exceptions import InstallError
 from ethpm_cli.install import (
     Config,
@@ -18,7 +19,7 @@
 @pytest.fixture
 def config(tmpdir):
     namespace = Namespace()
-    ethpm_dir = Path(tmpdir) / "ethpm_packages"
+    ethpm_dir = Path(tmpdir) / ETHPM_DIR_NAME
     ethpm_dir.mkdir()
     namespace.local_ipfs = False
     namespace.target_uri = None
@@ -78,7 +79,7 @@ def test_install_package(uri, pkg_name, alias, install_type, config, test_assets
     pkg = Package(uri, alias, config.ipfs_backend)
     install_package(pkg, config)
 
-    expected_package = test_assets_dir / pkg_name / install_type / "ethpm_packages"
+    expected_package = test_assets_dir / pkg_name / install_type / ETHPM_DIR_NAME
     assert check_dir_trees_equal(config.ethpm_dir, expected_package)
 
 
@@ -101,12 +102,12 @@ def test_can_install_same_package_twice_if_aliased(config, owned_pkg, test_asset
     assert (config.ethpm_dir / "owned").is_dir()
     assert check_dir_trees_equal(
         config.ethpm_dir / "owned",
-        test_assets_dir / "owned" / "ipfs_uri" / "ethpm_packages" / "owned",
+        test_assets_dir / "owned" / "ipfs_uri" / ETHPM_DIR_NAME / "owned",
     )
     assert (config.ethpm_dir / "owned-alias").is_dir()
     assert check_dir_trees_equal(
         config.ethpm_dir / "owned-alias",
-        test_assets_dir / "owned" / "ipfs_uri_alias" / "ethpm_packages" / "owned-alias",
+        test_assets_dir / "owned" / "ipfs_uri_alias" / ETHPM_DIR_NAME / "owned-alias",
     )
 
 
@@ -117,7 +118,7 @@ def test_install_multiple_packages(config, test_assets_dir, owned_pkg, wallet_pk
     assert (config.ethpm_dir / "wallet").is_dir()
     assert (config.ethpm_dir / "owned").is_dir()
     assert check_dir_trees_equal(
-        config.ethpm_dir, (test_assets_dir / "multiple" / "ethpm_packages")
+        config.ethpm_dir, (test_assets_dir / "multiple" / ETHPM_DIR_NAME)
     )
 
 
@@ -132,12 +133,12 @@ def test_uninstall_packages(
     assert (config.ethpm_dir / keep).is_dir()
     assert not (config.ethpm_dir / uninstall).is_dir()
     assert check_dir_trees_equal(
-        config.ethpm_dir, (test_assets_dir / keep / "ipfs_uri" / "ethpm_packages")
+        config.ethpm_dir, (test_assets_dir / keep / "ipfs_uri" / ETHPM_DIR_NAME)
     )
 
 
 def test_uninstall_package_warns_if_package_doesnt_exist(config):
-    with pytest.raises(InstallError, match="Unable to uninstall"):
+    with pytest.raises(InstallError, match="No package with the name invalid"):
         uninstall_package("invalid", config)
 
 
@@ -147,19 +148,19 @@ def test_list(config, owned_pkg, wallet_pkg, caplog):
 
     with caplog.at_level(logging.INFO):
         list_installed_packages(config)
-        assert "owned==1.0.0..." in caplog.text
-        assert "wallet==1.0.0..." in caplog.text
-        assert "- safe-math-lib==1.0.0..." in caplog.text
-        assert "- owned==1.0.0..." in caplog.text
         assert (
-            "(ipfs://QmbeVyFLSuEUxiXKwSsEjef6icpdTdA4kGG9BcrJXKNKUW)\n" in caplog.text
-        )
+            "owned==1.0.0 --- (ipfs://QmbeVyFLSuEUxiXKwSsEjef6icpdTdA4kGG9BcrJXKNKUW)\n"
+            in caplog.text
+        )  # noqa: E501
         assert (
-            "(ipfs://QmRMSm4k37mr2T3A2MGxAj2eAHGR5veibVt1t9Leh5waV1)\n" in caplog.text
-        )
+            "wallet==1.0.0 --- (ipfs://QmRMSm4k37mr2T3A2MGxAj2eAHGR5veibVt1t9Leh5waV1)\n"
+            in caplog.text
+        )  # noqa: E501
         assert (
-            "(ipfs://QmWgvM8yXGyHoGWqLFXvareJsoCZVsdrpKNCLMun3RaSJm)\n" in caplog.text
-        )
+            "- safe-math-lib==1.0.0 --- (ipfs://QmWgvM8yXGyHoGWqLFXvareJsoCZVsdrpKNCLMun3RaSJm)\n"
+            in caplog.text
+        )  # noqa: E501
         assert (
-            "(ipfs://QmbeVyFLSuEUxiXKwSsEjef6icpdTdA4kGG9BcrJXKNKUW)\n" in caplog.text
-        )
+            "- owned==1.0.0 --- (ipfs://QmbeVyFLSuEUxiXKwSsEjef6icpdTdA4kGG9BcrJXKNKUW)\n"
+            in caplog.text
+        )  # noqa: E501