constrain pip-shims version

pdm.lock

@@ -43,7 +43,7 @@ summary = "Cross-platform colored terminal text."
 name = "coverage"
 sections = ["dev"]
 version = "4.4.2"
-marker = "python_version < \"4.0\" and python_version >= \"2.7\" and python_version not in \"3.0, 3.1, 3.2, 3.3, 3.4\""
+marker = "python_version >= \"2.7\" and python_version not in \"3.0, 3.1, 3.2, 3.3\""
 summary = "Code coverage measurement for Python"
 
 [[package]]
@@ -86,7 +86,7 @@ six = ">=1.12.0"
 name = "importlib-metadata"
 sections = ["dev"]
 version = "1.4.0"
-marker = "python_version >= \"3.5\" and python_version < \"3.8\""
+marker = "python_version < \"3.8\" and python_version >= \"3.5\""
 summary = "Read metadata from Python packages"
 
 [package.dependencies]
@@ -276,7 +276,7 @@ summary = "Miscellaneous utilities for dealing with filesystems, paths, projects
 colorama = "!=0.4.2,>=0.3.4"
 six = "*"
 yaspin = "*"
-vistir = ">=0.4"
+vistir = {marker = "python_version >= \"2.7\" and python_version not in \"3.0, 3.1, 3.2, 3.3\"", version = "==0.5.0"}
 
 [[package]]
 name = "wcwidth"

pdm/cli/actions.py

@@ -233,7 +233,12 @@ def do_update(
     for name in packages:
         key = safe_name(name).lower()
         matched_name = next(
-            filter(lambda k: strip_extras(name)[0] == key, dependencies.keys()), None,
+            filter(
+                lambda k: safe_name(strip_extras(name)[0]).lower()
+                == safe_name(key).lower(),
+                dependencies.keys(),
+            ),
+            None,
         )
         if not matched_name:
             raise PdmUsageError(f"{name} is not found in {section} dependencies")

pyproject.toml

@@ -18,11 +18,12 @@ classifiers = [
 ]
 
 [tool.pdm.dependencies]
+# TODO: update pip and pip_shims version
 appdirs = "*"
 click = "*"
 distlib = "*"
 pip = "<20.0.0,>=19.3.1"
-pip_shims = "*"
+pip_shims = "~=0.4.0"
 pythonfinder = "*"
 tomlkit = "*"
 halo = "<1.0.0,>=0.0.28"