diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c4ab30d3..65ee9ec7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Change Log
 
+## 2.98.2 (2021-11-19)
+[Source](https://github.com/nerdvegas/rez/tree/2.98.2) | [Diff](https://github.com/nerdvegas/rez/compare/2.98.1...2.98.2)
+
+Added unmodified whichcraft vendored lib.
+See:
+* https://github.com/cookiecutter/whichcraft/blob/master/whichcraft.py
+* https://github.com/nerdvegas/rez/pull/1155
+
 ## 2.98.1 (2021-11-19)
 [Source](https://github.com/nerdvegas/rez/tree/2.98.1) | [Diff](https://github.com/nerdvegas/rez/compare/2.98.0...2.98.1)
 
diff --git a/release-rez.py b/release-rez.py
index 2a97c60b4..12efb12ae 100644
--- a/release-rez.py
+++ b/release-rez.py
@@ -237,7 +237,7 @@ def generate_changelog_entry(issue_nums):
         "-s", "--step", choices=("push", "tag", "release_notes"),
         help="Just run one step of the release process")
     parser.add_argument(
-        "-c", "--changelog", nargs='+', metavar="ISSUE", type=int,
+        "-c", "--changelog", nargs='*', metavar="ISSUE", type=int,
         help="Generate changelog entry to be added to CHANGELOG.md")
     parser.add_argument(
         "-v", "--verbose", action="store_true",
@@ -246,7 +246,7 @@ def generate_changelog_entry(issue_nums):
     opts = parser.parse_args()
     verbose = opts.verbose
 
-    if opts.changelog:
+    if opts.changelog is not None:
         issue_nums = opts.changelog
         generate_changelog_entry(issue_nums)
         sys.exit(0)
diff --git a/src/rez/utils/_version.py b/src/rez/utils/_version.py
index 878f9c78f..89288edab 100644
--- a/src/rez/utils/_version.py
+++ b/src/rez/utils/_version.py
@@ -1,7 +1,7 @@
 
 
 # Update this value to version up Rez. Do not place anything else in this file.
-_rez_version = "2.98.1"
+_rez_version = "2.98.2"
 
 
 # Copyright 2013-2016 Allan Johns.
diff --git a/src/rez/vendor/whichcraft/LICENSE b/src/rez/vendor/whichcraft/LICENSE
new file mode 100644
index 000000000..58b63d2ef
--- /dev/null
+++ b/src/rez/vendor/whichcraft/LICENSE
@@ -0,0 +1,12 @@
+Copyright (c) 2015-2016, Daniel Roy Greenfeld
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+* Neither the name of whichcraft nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/src/rez/vendor/whichcraft/__init__.py b/src/rez/vendor/whichcraft/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/rez/vendor/whichcraft/whichcraft.py b/src/rez/vendor/whichcraft/whichcraft.py
new file mode 100644
index 000000000..d8e4325dc
--- /dev/null
+++ b/src/rez/vendor/whichcraft/whichcraft.py
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+
+__author__ = "Daniel Roy Greenfeld"
+__email__ = "pydanny@gmail.com"
+__version__ = "0.6.1"
+
+import os
+import sys
+
+try:  # Forced testing
+    from shutil import which
+except ImportError:  # Forced testing
+    # Versions prior to Python 3.3 don't have shutil.which
+
+    def which(cmd, mode=os.F_OK | os.X_OK, path=None):
+        """Given a command, mode, and a PATH string, return the path which
+        conforms to the given mode on the PATH, or None if there is no such
+        file.
+        `mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
+        of os.environ.get("PATH"), or can be overridden with a custom search
+        path.
+        Note: This function was backported from the Python 3 source code.
+        """
+        # Check that a given file can be accessed with the correct mode.
+        # Additionally check that `file` is not a directory, as on Windows
+        # directories pass the os.access check.
+
+        def _access_check(fn, mode):
+            return os.path.exists(fn) and os.access(fn, mode) and not os.path.isdir(fn)
+
+        # If we're given a path with a directory part, look it up directly
+        # rather than referring to PATH directories. This includes checking
+        # relative to the current directory, e.g. ./script
+        if os.path.dirname(cmd):
+            if _access_check(cmd, mode):
+                return cmd
+
+            return None
+
+        if path is None:
+            path = os.environ.get("PATH", os.defpath)
+        if not path:
+            return None
+
+        path = path.split(os.pathsep)
+
+        if sys.platform == "win32":
+            # The current directory takes precedence on Windows.
+            if os.curdir not in path:
+                path.insert(0, os.curdir)
+
+            # PATHEXT is necessary to check on Windows.
+            pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
+            # See if the given file matches any of the expected path
+            # extensions. This will allow us to short circuit when given
+            # "python.exe". If it does match, only test that one, otherwise we
+            # have to try others.
+            if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
+                files = [cmd]
+            else:
+                files = [cmd + ext for ext in pathext]
+        else:
+            # On other platforms you don't have things like PATHEXT to tell you
+            # what file suffixes are executable, so just pass on cmd as-is.
+            files = [cmd]
+
+        seen = set()
+        for dir in path:
+            normdir = os.path.normcase(dir)
+            if normdir not in seen:
+                seen.add(normdir)
+                for thefile in files:
+                    name = os.path.join(dir, thefile)
+                    if _access_check(name, mode):
+                        return name
+
+        return None