diff --git i/direnvrc w/direnvrc
index ddac0f5..fbcade6 100644
--- i/direnvrc
+++ w/direnvrc
@@ -29,10 +29,8 @@ _nix_direnv_warning() {
 
 _nix_direnv_error() { log_error "${_NIX_DIRENV_LOG_PREFIX}$*"; }
 
-_nix_direnv_nix=""
-
 _nix() {
-  ${_nix_direnv_nix} --extra-experimental-features "nix-command flakes" "$@"
+  nix --extra-experimental-features "nix-command flakes" "$@"
 }
 
 _require_version() {
@@ -55,34 +53,6 @@ _require_cmd_version() {
   _require_version "$cmd" "${BASH_REMATCH[1]}" "$required"
 }
 
-_nix_direnv_resolve_nix() {
-  local ambient_nix
-
-  if ambient_nix=$(command -v nix); then
-    if _require_cmd_version "${ambient_nix}" "${NIX_MIN_VERSION}"; then
-      echo "${ambient_nix}"
-      return 0
-    else
-      _nix_direnv_warning "Nix version in PATH is too old, wanted ${NIX_MIN_VERSION}+, got $(${ambient_nix} --version), will attempt fallback"
-    fi
-  else
-    _nix_direnv_warning "Could not find Nix in PATH, will attempt fallback"
-  fi
-
-  if [ -n "${NIX_DIRENV_FALLBACK_NIX}" ]; then
-    if _require_cmd_version "${NIX_DIRENV_FALLBACK_NIX}" "${NIX_MIN_VERSION}"; then
-      echo "${NIX_DIRENV_FALLBACK_NIX}"
-      return 0
-    else
-      _nix_direnv_error "Fallback Nix version is too old, wanted ${NIX_MIN_VERSION}+, got $(${NIX_DIRENV_FALLBACK_NIX} --version)"
-      return 1
-    fi
-  else
-    _nix_direnv_error "Could not find fallback Nix binary, please add Nix to PATH or set NIX_DIRENV_FALLBACK_NIX"
-    return 1
-  fi
-}
-
 _nix_direnv_preflight() {
   if [[ -z $direnv ]]; then
     # shellcheck disable=2016
@@ -102,10 +72,6 @@ _nix_direnv_preflight() {
     fi
   fi
 
-  if ! _nix_direnv_nix=$(_nix_direnv_resolve_nix); then
-    return 1
-  fi
-
   local layout_dir
   layout_dir=$(direnv_layout_dir)