treefmt: use shfmt and statix

simplifies treefmt.nix and adds `direnvrc` to treefmt includes for
shellcheck

direnvrc

@@ -54,8 +54,9 @@ _require_cmd_version() {
 }
 
 _nix_direnv_preflight() {
-  if [[ -z "$direnv" ]]; then
+  if [[ -z $direnv ]]; then
-    _nix_direnv_fatal "\$direnv environment variable was not defined. Was this script run inside direnv?"
+    # shellcheck disable=2016
+    _nix_direnv_fatal '$direnv environment variable was not defined. Was this script run inside direnv?'
   fi
 
   if [[ -n ${NIX_BIN_PREFIX:-} ]]; then
@@ -119,7 +120,7 @@ nix_direnv_version() {
 
 _nix_export_or_unset() {
   local key=$1 value=$2
-  if [[ "$value" == __UNSET__ ]]; then
+  if [[ $value == __UNSET__ ]]; then
     unset "$key"
   else
     export "$key=$value"
@@ -137,7 +138,7 @@ _nix_import_env() {
   local old_xdg_data_dirs=${XDG_DATA_DIRS:-}
 
   # On the first run in manual mode, the profile_rc does not exist.
-  if [[ ! -e "$profile_rc" ]]; then
+  if [[ ! -e $profile_rc ]]; then
     return
   fi
 
@@ -147,7 +148,7 @@ _nix_import_env() {
   # as it may be garbage collected.
   # Instead - just remove it immediately.
   # Use recursive & force as it may not be empty.
-  if [[ -n "${NIX_BUILD_TOP+x}" && "$NIX_BUILD_TOP" == */nix-shell.* && -d "$NIX_BUILD_TOP" ]]; then
+  if [[ -n ${NIX_BUILD_TOP+x} && $NIX_BUILD_TOP == */nix-shell.* && -d $NIX_BUILD_TOP ]]; then
     rm -rf "$NIX_BUILD_TOP"
   fi
 
@@ -161,7 +162,7 @@ _nix_import_env() {
   local IFS=:
   for dir in $new_xdg_data_dirs${old_xdg_data_dirs:+:}$old_xdg_data_dirs; do
     dir="${dir%/}" # remove trailing slashes
-    if [[ :$XDG_DATA_DIRS: = *:$dir:* ]]; then
+    if [[ :$XDG_DATA_DIRS: == *:$dir:* ]]; then
       continue # already present, skip
     fi
     XDG_DATA_DIRS="$XDG_DATA_DIRS${XDG_DATA_DIRS:+:}$dir"
@@ -206,14 +207,14 @@ nix_direnv_watch_file() {
 
 _nix_direnv_watches() {
   local -n _watches=$1
-  if [[ -z "${DIRENV_WATCHES-}" ]]; then
+  if [[ -z ${DIRENV_WATCHES-} ]]; then
     return
   fi
   while IFS= read -r line; do
     local regex='"[Pp]ath": "(.+)"$'
-    if [[ "$line" =~ $regex ]]; then
+    if [[ $line =~ $regex ]]; then
       local path="${BASH_REMATCH[1]}"
-      if [[ "$path" == "${XDG_DATA_HOME:-${HOME:-/var/empty}/.local/share}/direnv/allow/"* ]]; then
+      if [[ $path == "${XDG_DATA_HOME:-${HOME:-/var/empty}/.local/share}/direnv/allow/"* ]]; then
         continue
       fi
       # expand new lines and other json escapes
@@ -230,10 +231,10 @@ nix_direnv_manual_reload() {
 }
 
 _nix_direnv_warn_manual_reload() {
-  if [[ -e "$1" ]]; then
+  if [[ -e $1 ]]; then
-    _nix_direnv_warning "cache is out of date. use \"nix-direnv-reload\" to reload"
+    _nix_direnv_warning 'cache is out of date. use "nix-direnv-reload" to reload'
   else
-    _nix_direnv_warning "cache does not exist. use \"nix-direnv-reload\" to create it"
+    _nix_direnv_warning 'cache does not exist. use "nix-direnv-reload" to create it'
   fi
 }
 
@@ -244,9 +245,9 @@ use_flake() {
   flake_dir="${flake_expr%#*}"
   flake_dir=${flake_dir#"path:"}
 
-  if [[ "$flake_expr" = -* ]]; then
+  if [[ $flake_expr == -* ]]; then
     local message="the first argument must be a flake expression"
-    if [[ -n "$2" ]]; then
+    if [[ -n $2 ]]; then
       _nix_direnv_fatal "$message"
     else
       _nix_direnv_fatal "$message. did you mean 'use flake . $1'?"
@@ -256,7 +257,7 @@ use_flake() {
   local files_to_watch
   files_to_watch=("$HOME/.direnvrc" "$HOME/.config/direnv/direnvrc")
 
-  if [[ -d "$flake_dir" ]]; then
+  if [[ -d $flake_dir ]]; then
     files_to_watch+=("$flake_dir/flake.nix" "$flake_dir/flake.lock" "$flake_dir/devshell.toml")
   fi
 
@@ -273,19 +274,17 @@ use_flake() {
   _nix_direnv_watches watches
   local file=
   for file in "${watches[@]}"; do
-    if [[ "$file" -nt "$profile_rc" ]]; then
+    if [[ $file -nt $profile_rc ]]; then
       need_update=1
       break
     fi
   done
 
-
+  if [[ ! -e $profile ||
-  if [[ ! -e "$profile"
+    ! -e $profile_rc ||
-     || ! -e "$profile_rc"
+    $need_update -eq 1 ]] \
-     || $need_update -eq 1
+    ; then
-     ]];
+    if [[ $_nix_direnv_manual_reload -eq 1 && -z ${_nix_direnv_force_reload-} ]]; then
-  then
-    if [[ $_nix_direnv_manual_reload -eq 1 && -z "${_nix_direnv_force_reload-}" ]]; then
       _nix_direnv_warn_manual_reload "$profile_rc"
 
     else
@@ -306,7 +305,7 @@ use_flake() {
           --json --no-write-lock-file \
           "$flake_dir")
 
-        while [[ "$flake_input_paths" =~ /nix/store/[^\"]+ ]]; do
+        while [[ $flake_input_paths =~ /nix/store/[^\"]+ ]]; do
           local store_path="${BASH_REMATCH[0]}"
           _nix_add_gcroot "${store_path}" "${flake_inputs}/${store_path##*/}"
           flake_input_paths="${flake_input_paths/${store_path}/}"
@@ -316,7 +315,7 @@ use_flake() {
       fi
     fi
   else
-    if [[ -e "${profile_rc}" ]]; then
+    if [[ -e ${profile_rc} ]]; then
       # Our cache is valid, use that
       _nix_direnv_info "using cached dev shell"
     else
@@ -340,15 +339,18 @@ use_nix() {
       local head
       read -r head <"${path}/.git/HEAD"
       local regex="ref: (.*)"
-      if [[ "$head" =~  $regex ]]; then
+      if [[ $head =~ $regex ]]; then
         read -r version <"${path}/.git/${BASH_REMATCH[1]}"
       else
         version="$head"
       fi
-    elif [[ -f "${path}/.version" && "${path}" == "/nix/store/"* ]]; then
+    elif [[ -f "${path}/.version" && ${path} == "/nix/store/"* ]]; then
       # borrow some bits from the store path
       local version_prefix
-      read -r version_prefix < <(cat "${path}/.version" ; echo)
+      read -r version_prefix < <(
+        cat "${path}/.version"
+        echo
+      )
       version="${version_prefix}-${path:11:16}"
     fi
   fi
@@ -369,7 +371,7 @@ use_nix() {
     nixfile="./default.nix"
   fi
 
-  while [[ "$#" -gt 0 ]]; do
+  while [[ $# -gt 0 ]]; do
     i="$1"
     shift
 
@@ -421,34 +423,32 @@ use_nix() {
   _nix_direnv_watches watches
   local file=
   for file in "${watches[@]}"; do
-    if [[ "$file" -nt "$profile_rc" ]]; then
+    if [[ $file -nt $profile_rc ]]; then
       need_update=1
       break
     fi
   done
 
-  if [[ ! -e "$profile"
+  if [[ ! -e $profile ||
-     || ! -e "$profile_rc"
+    ! -e $profile_rc ||
-     || $need_update -eq 1
+    $need_update -eq 1 ]] \
-     ]];
+    ; then
-  then
+    if [[ $_nix_direnv_manual_reload -eq 1 && -z ${_nix_direnv_force_reload-} ]]; then
-    if [[ $_nix_direnv_manual_reload -eq 1 && -z "${_nix_direnv_force_reload-}" ]]; then
       _nix_direnv_warn_manual_reload "$profile_rc"
     else
       local tmp_profile="${layout_dir}/nix-tmp-profile.$$"
       local tmp_profile_rc
-      if [[ -n "$packages" ]]; then
+      if [[ -n $packages ]]; then
         extra_args+=("--expr" "with import <nixpkgs> {}; mkShell { buildInputs = [ $packages ]; }")
       else
         # figure out what attribute we should build
-        if [[ -z "$attribute" ]]; then
+        if [[ -z $attribute ]]; then
           extra_args+=("--file" "$nixfile")
         else
           extra_args+=("--expr" "(import ${nixfile} {}).${attribute}")
         fi
       fi
 
-
       if tmp_profile_rc=$(_nix \
         print-dev-env \
         --profile "$tmp_profile" \
@@ -456,7 +456,6 @@ use_nix() {
         "${extra_args[@]}"); then
         _nix_clean_old_gcroots "$layout_dir"
 
-
         echo "$tmp_profile_rc" >"$profile_rc"
         _nix_add_gcroot "$tmp_profile" "$profile"
         rm -f "$tmp_profile" "$tmp_profile"*
@@ -464,7 +463,7 @@ use_nix() {
       fi
     fi
   else
-    if [[ -e "${profile_rc}" ]]; then
+    if [[ -e ${profile_rc} ]]; then
       _nix_direnv_info "using cached dev shell"
     else
       _nix_direnv_fatal "use_nix failed - Is your nix shell working?"

flake.nix

@@ -1,10 +1,16 @@
 {
   description = "A faster, persistent implementation of `direnv`'s `use_nix`, to replace the built-in one.";
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs = {
-  inputs.flake-parts.url = "github:hercules-ci/flake-parts";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-  inputs.flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
+    flake-parts = {
-  inputs.treefmt-nix.url = "github:numtide/treefmt-nix";
+      url = "github:hercules-ci/flake-parts";
-  inputs.treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
 
   outputs = inputs @ { flake-parts, ... }:
     flake-parts.lib.mkFlake { inherit inputs; }

scripts/create-release.sh

@@ -6,7 +6,7 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 cd "$SCRIPT_DIR/.."
 
 version=${1:-}
-if [[ -z "$version" ]]; then
+if [[ -z $version ]]; then
   echo "USAGE: $0 version" 2>/dev/null
   exit 1
 fi

treefmt.nix

@@ -8,27 +8,21 @@
       # Used to find the project root
       projectRootFile = "flake.lock";
 
-      programs.deno.enable = true;
+      programs = {
-      programs.mypy.enable = true;
+        deadnix.enable = true;
-      programs.shellcheck.enable = true;
+        deno.enable = true;
-
+        mypy.enable = true;
-      settings.formatter = {
+        nixpkgs-fmt.enable = true;
-        nix = {
+        shellcheck.enable = true;
-          command = "sh";
+        shfmt.enable = true;
-          options = [
+        statix.enable = true;
-            "-eucx"
-            ''
-              # First deadnix
-              ${lib.getExe pkgs.deadnix} --edit "$@"
-              # Then nixpkgs-fmt
-              ${lib.getExe pkgs.nixpkgs-fmt} "$@"
-            ''
-            "--"
-          ];
-          includes = [ "*.nix" ];
-          excludes = [ "nix/sources.nix" ];
       };
 
+      settings.formatter =
+        let
+          sh-includes = [ "*.sh" "direnvrc" ];
+        in
+        {
           python = {
             command = "sh";
             options = [
@@ -41,6 +35,10 @@
             ];
             includes = [ "*.py" ];
           };
+
+          shellcheck.includes = sh-includes;
+
+          shfmt.includes = sh-includes;
         };
     };
   };