diff --git a/.devenv/profile b/.devenv/profile
new file mode 120000
index 00000000..a9a53af5
--- /dev/null
+++ b/.devenv/profile
@@ -0,0 +1 @@
+/nix/store/7k68a83zyk7wzkjaa5kplgjqsyi4wpwd-devenv-profile
\ No newline at end of file
diff --git a/.direnv/bin/nix-direnv-reload b/.direnv/bin/nix-direnv-reload
new file mode 100755
index 00000000..c9936f71
--- /dev/null
+++ b/.direnv/bin/nix-direnv-reload
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -e
+if [[ ! -d "/Users/mark/Projects/viper/mapstructure" ]]; then
+  echo "Cannot find source directory; Did you move it?"
+  echo "(Looking for "/Users/mark/Projects/viper/mapstructure")"
+  echo 'Cannot force reload with this script - use "direnv reload" manually and then try again'
+  exit 1
+fi
+
+# rebuild the cache forcefully
+_nix_direnv_force_reload=1 direnv exec "/Users/mark/Projects/viper/mapstructure" true
+
+# Update the mtime for .envrc.
+# This will cause direnv to reload again - but without re-building.
+touch "/Users/mark/Projects/viper/mapstructure/.envrc"
+
+# Also update the timestamp of whatever profile_rc we have.
+# This makes sure that we know we are up to date.
+touch -r "/Users/mark/Projects/viper/mapstructure/.envrc" "/Users/mark/Projects/viper/mapstructure/.direnv"/*.rc
diff --git a/.direnv/flake-inputs/027wnc7kfpdl7n7xr7pby8csjd31d8xw-source b/.direnv/flake-inputs/027wnc7kfpdl7n7xr7pby8csjd31d8xw-source
new file mode 120000
index 00000000..ff0cfd66
--- /dev/null
+++ b/.direnv/flake-inputs/027wnc7kfpdl7n7xr7pby8csjd31d8xw-source
@@ -0,0 +1 @@
+/nix/store/027wnc7kfpdl7n7xr7pby8csjd31d8xw-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/2gkqfvzq2j0vbrlkx3y0k8qxyn4px989-source b/.direnv/flake-inputs/2gkqfvzq2j0vbrlkx3y0k8qxyn4px989-source
new file mode 120000
index 00000000..894a8c7f
--- /dev/null
+++ b/.direnv/flake-inputs/2gkqfvzq2j0vbrlkx3y0k8qxyn4px989-source
@@ -0,0 +1 @@
+/nix/store/2gkqfvzq2j0vbrlkx3y0k8qxyn4px989-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/4yg9rk38xim0166ynim8ndxvh6qi4pcc-source b/.direnv/flake-inputs/4yg9rk38xim0166ynim8ndxvh6qi4pcc-source
new file mode 120000
index 00000000..9f814e2c
--- /dev/null
+++ b/.direnv/flake-inputs/4yg9rk38xim0166ynim8ndxvh6qi4pcc-source
@@ -0,0 +1 @@
+/nix/store/4yg9rk38xim0166ynim8ndxvh6qi4pcc-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/88fpp9lrbs0vk8yf94bz045y3bfz7m2r-source b/.direnv/flake-inputs/88fpp9lrbs0vk8yf94bz045y3bfz7m2r-source
new file mode 120000
index 00000000..800aae39
--- /dev/null
+++ b/.direnv/flake-inputs/88fpp9lrbs0vk8yf94bz045y3bfz7m2r-source
@@ -0,0 +1 @@
+/nix/store/88fpp9lrbs0vk8yf94bz045y3bfz7m2r-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/8sm7wycza5fl6lnsmw11sn4vqkvw4xyh-source b/.direnv/flake-inputs/8sm7wycza5fl6lnsmw11sn4vqkvw4xyh-source
new file mode 120000
index 00000000..c2649c1f
--- /dev/null
+++ b/.direnv/flake-inputs/8sm7wycza5fl6lnsmw11sn4vqkvw4xyh-source
@@ -0,0 +1 @@
+/nix/store/8sm7wycza5fl6lnsmw11sn4vqkvw4xyh-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/a6m3cymd6cw5kz3zw6hxamd7cnb6mvjy-source b/.direnv/flake-inputs/a6m3cymd6cw5kz3zw6hxamd7cnb6mvjy-source
new file mode 120000
index 00000000..d5f4821d
--- /dev/null
+++ b/.direnv/flake-inputs/a6m3cymd6cw5kz3zw6hxamd7cnb6mvjy-source
@@ -0,0 +1 @@
+/nix/store/a6m3cymd6cw5kz3zw6hxamd7cnb6mvjy-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/cjvwy2rr87ir1nb6wvs9n6lvbnzlqrdg-source b/.direnv/flake-inputs/cjvwy2rr87ir1nb6wvs9n6lvbnzlqrdg-source
new file mode 120000
index 00000000..d177a31f
--- /dev/null
+++ b/.direnv/flake-inputs/cjvwy2rr87ir1nb6wvs9n6lvbnzlqrdg-source
@@ -0,0 +1 @@
+/nix/store/cjvwy2rr87ir1nb6wvs9n6lvbnzlqrdg-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/d334lhlj2amjdpl3np78lalp2f8c4d5c-source b/.direnv/flake-inputs/d334lhlj2amjdpl3np78lalp2f8c4d5c-source
new file mode 120000
index 00000000..60e86db4
--- /dev/null
+++ b/.direnv/flake-inputs/d334lhlj2amjdpl3np78lalp2f8c4d5c-source
@@ -0,0 +1 @@
+/nix/store/d334lhlj2amjdpl3np78lalp2f8c4d5c-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/d50vypw46l5rmmgz16hzg5r5r268ak2n-source b/.direnv/flake-inputs/d50vypw46l5rmmgz16hzg5r5r268ak2n-source
new file mode 120000
index 00000000..9219af19
--- /dev/null
+++ b/.direnv/flake-inputs/d50vypw46l5rmmgz16hzg5r5r268ak2n-source
@@ -0,0 +1 @@
+/nix/store/d50vypw46l5rmmgz16hzg5r5r268ak2n-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/isia7synl0mdbcvfwav5ywnrwmwbwvxv-source b/.direnv/flake-inputs/isia7synl0mdbcvfwav5ywnrwmwbwvxv-source
new file mode 120000
index 00000000..41f5b07e
--- /dev/null
+++ b/.direnv/flake-inputs/isia7synl0mdbcvfwav5ywnrwmwbwvxv-source
@@ -0,0 +1 @@
+/nix/store/isia7synl0mdbcvfwav5ywnrwmwbwvxv-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/qjw6nq34h4s78573nh70gsl2a2qz76mz-source b/.direnv/flake-inputs/qjw6nq34h4s78573nh70gsl2a2qz76mz-source
new file mode 120000
index 00000000..d3698b7c
--- /dev/null
+++ b/.direnv/flake-inputs/qjw6nq34h4s78573nh70gsl2a2qz76mz-source
@@ -0,0 +1 @@
+/nix/store/qjw6nq34h4s78573nh70gsl2a2qz76mz-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/r2ip1850igy8kciyaagw502s3c6ph1s4-source b/.direnv/flake-inputs/r2ip1850igy8kciyaagw502s3c6ph1s4-source
new file mode 120000
index 00000000..b1dabc8a
--- /dev/null
+++ b/.direnv/flake-inputs/r2ip1850igy8kciyaagw502s3c6ph1s4-source
@@ -0,0 +1 @@
+/nix/store/r2ip1850igy8kciyaagw502s3c6ph1s4-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/xkci0s3glinkrb3prpz0ah6b8fg51504-source b/.direnv/flake-inputs/xkci0s3glinkrb3prpz0ah6b8fg51504-source
new file mode 120000
index 00000000..3a912f12
--- /dev/null
+++ b/.direnv/flake-inputs/xkci0s3glinkrb3prpz0ah6b8fg51504-source
@@ -0,0 +1 @@
+/nix/store/xkci0s3glinkrb3prpz0ah6b8fg51504-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/yj1wxm9hh8610iyzqnz75kvs6xl8j3my-source b/.direnv/flake-inputs/yj1wxm9hh8610iyzqnz75kvs6xl8j3my-source
new file mode 120000
index 00000000..f17959fc
--- /dev/null
+++ b/.direnv/flake-inputs/yj1wxm9hh8610iyzqnz75kvs6xl8j3my-source
@@ -0,0 +1 @@
+/nix/store/yj1wxm9hh8610iyzqnz75kvs6xl8j3my-source
\ No newline at end of file
diff --git a/.direnv/flake-inputs/yxld2qw84ka591fay1xkh5jflbgxjqa1-source b/.direnv/flake-inputs/yxld2qw84ka591fay1xkh5jflbgxjqa1-source
new file mode 120000
index 00000000..a55cab58
--- /dev/null
+++ b/.direnv/flake-inputs/yxld2qw84ka591fay1xkh5jflbgxjqa1-source
@@ -0,0 +1 @@
+/nix/store/yxld2qw84ka591fay1xkh5jflbgxjqa1-source
\ No newline at end of file
diff --git a/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa b/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa
new file mode 120000
index 00000000..ee69f1fa
--- /dev/null
+++ b/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa
@@ -0,0 +1 @@
+/nix/store/3g2mvqm72zsf7rsaffzf0snsl15b7b7m-devenv-shell-env
\ No newline at end of file
diff --git a/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa.rc b/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa.rc
new file mode 100644
index 00000000..dfe8e72c
--- /dev/null
+++ b/.direnv/flake-profile-a5d5b61aa8a61b7d9d765e1daf971a9a578f1cfa.rc
@@ -0,0 +1,180 @@
+unset shellHook
+PATH=${PATH:-}
+nix_saved_PATH="$PATH"
+XDG_DATA_DIRS=${XDG_DATA_DIRS:-}
+nix_saved_XDG_DATA_DIRS="$XDG_DATA_DIRS"
+BASH='/nix/store/8rxm4jzw1dddm53rpc2zdqgafadn7d5n-bash-interactive-5.2-p21/bin/bash'
+HOSTTYPE='aarch64'
+IFS=' 	
+'
+IN_NIX_SHELL='impure'
+export IN_NIX_SHELL
+LINENO='76'
+MACHTYPE='aarch64-apple-darwin22.6.0'
+NIX_BUILD_CORES='0'
+export NIX_BUILD_CORES
+NIX_STORE='/nix/store'
+export NIX_STORE
+OLDPWD=''
+export OLDPWD
+OPTERR='1'
+OSTYPE='darwin22.6.0'
+PATH='/path-not-set'
+export PATH
+PS4='+ '
+builder='/nix/store/8rxm4jzw1dddm53rpc2zdqgafadn7d5n-bash-interactive-5.2-p21/bin/bash'
+export builder
+dontAddDisableDepTrack='1'
+export dontAddDisableDepTrack
+name='devenv-shell-env'
+export name
+out='/Users/mark/Projects/viper/mapstructure/outputs/out'
+export out
+outputs='out'
+shellHook='
+# Remove all the unnecessary noise that is set by the build env
+unset NIX_BUILD_TOP NIX_BUILD_CORES NIX_STORE
+unset TEMP TEMPDIR TMP 
+# $name variable is preserved to keep it compatible with pure shell https://github.com/sindresorhus/pure/blob/47c0c881f0e7cfdb5eaccd335f52ad17b897c060/pure.zsh#L235
+unset builder out shellHook stdenv system
+# Flakes stuff
+unset dontAddDisableDepTrack outputs
+
+# For `nix develop`. We get /noshell on Linux and /sbin/nologin on macOS.
+if [[ "$SHELL" == "/noshell" || "$SHELL" == "/sbin/nologin" ]]; then
+  export SHELL=/nix/store/8rxm4jzw1dddm53rpc2zdqgafadn7d5n-bash-interactive-5.2-p21/bin/bash
+fi
+
+# https://github.com/numtide/devshell/issues/158
+PATH=${PATH#/path-not-set:}
+
+export DEVENV_PROFILE=/nix/store/7k68a83zyk7wzkjaa5kplgjqsyi4wpwd-devenv-profile
+
+# add installed packages to PATH
+export PATH="$DEVENV_PROFILE/bin:$PATH"
+
+# prepend common compilation lookup paths
+export PKG_CONFIG_PATH="$DEVENV_PROFILE/lib/pkgconfig:${PKG_CONFIG_PATH-}"
+export LD_LIBRARY_PATH="$DEVENV_PROFILE/lib:${LD_LIBRARY_PATH-}"
+export LIBRARY_PATH="$DEVENV_PROFILE/lib:${LIBRARY_PATH-}"
+export C_INCLUDE_PATH="$DEVENV_PROFILE/include:${C_INCLUDE_PATH-}"
+
+# these provide shell completions / default config options
+export XDG_DATA_DIRS="$DEVENV_PROFILE/share:${XDG_DATA_DIRS-}"
+export XDG_CONFIG_DIRS="$DEVENV_PROFILE/etc/xdg:${XDG_CONFIG_DIRS-}"
+
+export DEVENV_DOTFILE='\''/Users/mark/Projects/viper/mapstructure/.devenv'\''
+export DEVENV_PROFILE='\''/nix/store/7k68a83zyk7wzkjaa5kplgjqsyi4wpwd-devenv-profile'\''
+export DEVENV_ROOT='\''/Users/mark/Projects/viper/mapstructure'\''
+export DEVENV_STATE='\''/Users/mark/Projects/viper/mapstructure/.devenv/state'\''
+export GOPATH='\''/Users/mark/Projects/viper/mapstructure/.devenv/state/go'\''
+export GOROOT='\''/nix/store/b0rpa34hn6cgbkbn8sfr5dzv723ia3z2-go-1.21.5/share/go/'\''
+
+export PATH=/nix/store/zf05xsah3wfzcsb667ncxlj7xkgjpi20-pre-commit-3.3.3/bin:$PATH
+if ! type -t git >/dev/null; then
+  # This happens in pure shells, including lorri
+  echo 1>&2 "WARNING: pre-commit-hooks.nix: git command not found; skipping installation."
+elif ! /nix/store/q7avibx4c00h7zl3jfh3r5mc4xs6wsnj-git-2.42.0/bin/git rev-parse --git-dir &> /dev/null; then
+  echo 1>&2 "WARNING: pre-commit-hooks.nix: .git not found; skipping installation."
+else
+  GIT_WC=`/nix/store/q7avibx4c00h7zl3jfh3r5mc4xs6wsnj-git-2.42.0/bin/git rev-parse --show-toplevel`
+
+  # These update procedures compare before they write, to avoid
+  # filesystem churn. This improves performance with watch tools like lorri
+  # and prevents installation loops by via lorri.
+
+  if readlink "${GIT_WC}/.pre-commit-config.yaml" >/dev/null \
+    && [[ $(readlink "${GIT_WC}/.pre-commit-config.yaml") == /nix/store/3ws5xna2njkw8s4l002r5w80jrgq1wl9-pre-commit-config.json ]]; then
+    echo 1>&2 "pre-commit-hooks.nix: hooks up to date"
+  else
+    echo 1>&2 "pre-commit-hooks.nix: updating $PWD repo"
+
+    [ -L .pre-commit-config.yaml ] && unlink .pre-commit-config.yaml
+
+    if [ -e "${GIT_WC}/.pre-commit-config.yaml" ]; then
+      echo 1>&2 "pre-commit-hooks.nix: WARNING: Refusing to install because of pre-existing .pre-commit-config.yaml"
+      echo 1>&2 "    1. Translate .pre-commit-config.yaml contents to the new syntax in your Nix file"
+      echo 1>&2 "        see https://github.com/cachix/pre-commit-hooks.nix#getting-started"
+      echo 1>&2 "    2. remove .pre-commit-config.yaml"
+      echo 1>&2 "    3. add .pre-commit-config.yaml to .gitignore"
+    else
+      ln -fs /nix/store/3ws5xna2njkw8s4l002r5w80jrgq1wl9-pre-commit-config.json "${GIT_WC}/.pre-commit-config.yaml"
+      # Remove any previously installed hooks (since pre-commit itself has no convergent design)
+      hooks="pre-commit pre-merge-commit pre-push prepare-commit-msg commit-msg post-checkout post-commit"
+      for hook in $hooks; do
+        pre-commit uninstall -t $hook
+      done
+      /nix/store/q7avibx4c00h7zl3jfh3r5mc4xs6wsnj-git-2.42.0/bin/git config --local core.hooksPath ""
+      # Add hooks for configured stages (only) ...
+      if [ ! -z "commit" ]; then
+        for stage in commit; do
+          if [[ "$stage" == "manual" ]]; then
+            continue
+          fi
+          case $stage in
+            # if you amend these switches please also review $hooks above
+            commit | merge-commit | push)
+              stage="pre-"$stage
+              pre-commit install -t $stage
+              ;;
+            prepare-commit-msg | commit-msg | post-checkout | post-commit)
+              pre-commit install -t $stage
+              ;;
+            *)
+              echo 1>&2 "ERROR: pre-commit-hooks.nix: either $stage is not a valid stage or pre-commit-hooks.nix doesn'\''t yet support it."
+              exit 1
+              ;;
+          esac
+        done
+      # ... or default '\''pre-commit'\'' hook
+      else
+        pre-commit install
+      fi
+      /nix/store/q7avibx4c00h7zl3jfh3r5mc4xs6wsnj-git-2.42.0/bin/git config --local core.hooksPath "$(/nix/store/q7avibx4c00h7zl3jfh3r5mc4xs6wsnj-git-2.42.0/bin/git rev-parse --git-common-dir)/hooks"
+    fi
+  fi
+fi
+
+
+export PATH=$GOPATH/bin:$PATH
+
+export PS1="\[\e[0;34m\](devenv)\[\e[0m\] ${PS1-}"
+
+# set path to locales on non-NixOS Linux hosts
+
+
+# note what environments are active, but make sure we don'\''t repeat them
+if [[ ! "${DIRENV_ACTIVE-}" =~ (^|:)"$PWD"(:|$) ]]; then
+  export DIRENV_ACTIVE="$PWD:${DIRENV_ACTIVE-}"
+fi
+
+# devenv helper
+if [ ! type -p direnv &>/dev/null && -f .envrc ]; then
+  echo "You have .envrc but direnv command is not installed."
+  echo "Please install direnv: https://direnv.net/docs/installation.html"
+fi
+
+mkdir -p .devenv
+rm -f .devenv/profile
+ln -s /nix/store/7k68a83zyk7wzkjaa5kplgjqsyi4wpwd-devenv-profile .devenv/profile
+
+'
+export shellHook
+stdenv='/nix/store/4dmdxaw0gzx9ns4n60kczbhsm0qlq3zz-naked-stdenv'
+export stdenv
+system='aarch64-darwin'
+export system
+runHook ()
+{
+ 
+    eval "$shellHook";
+    unset runHook
+}
+PATH="$PATH${nix_saved_PATH:+:$nix_saved_PATH}"
+XDG_DATA_DIRS="$XDG_DATA_DIRS${nix_saved_XDG_DATA_DIRS:+:$nix_saved_XDG_DATA_DIRS}"
+export NIX_BUILD_TOP="$(mktemp -d -t nix-shell.XXXXXX)"
+export TMP="$NIX_BUILD_TOP"
+export TMPDIR="$NIX_BUILD_TOP"
+export TEMP="$NIX_BUILD_TOP"
+export TEMPDIR="$NIX_BUILD_TOP"
+eval "$shellHook"
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 120000
index 00000000..6beea463
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1 @@
+/nix/store/3ws5xna2njkw8s4l002r5w80jrgq1wl9-pre-commit-config.json
\ No newline at end of file
diff --git a/mapstructure.go b/mapstructure.go
index 1f646317..d7ed4473 100644
--- a/mapstructure.go
+++ b/mapstructure.go
@@ -1163,7 +1163,7 @@ func (d *Decoder) decodeArray(name string, data interface{}, val reflect.Value)
 
 	valArray := val
 
-	if valArray.Comparable() && valArray.Interface() == reflect.Zero(valArray.Type()).Interface() || d.config.ZeroFields {
+	if isComparable(valArray) && valArray.Interface() == reflect.Zero(valArray.Type()).Interface() || d.config.ZeroFields {
 		// Check input type
 		if dataValKind != reflect.Array && dataValKind != reflect.Slice {
 			if d.config.WeaklyTypedInput {
diff --git a/reflect_go1_19.go b/reflect_go1_19.go
new file mode 100644
index 00000000..cee9bd37
--- /dev/null
+++ b/reflect_go1_19.go
@@ -0,0 +1,9 @@
+//go:build !go1.20
+
+package mapstructure
+
+import "reflect"
+
+func isComparable(v reflect.Value) bool {
+	return false
+}
diff --git a/reflect_go1_20.go b/reflect_go1_20.go
new file mode 100644
index 00000000..f8255a1b
--- /dev/null
+++ b/reflect_go1_20.go
@@ -0,0 +1,10 @@
+//go:build go1.20
+
+package mapstructure
+
+import "reflect"
+
+// TODO: remove once we drop support for Go <1.20
+func isComparable(v reflect.Value) bool {
+	return v.Comparable()
+}