From bcba9830e4c8f63ea03003b861ae1ac39314a080 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sun, 26 Nov 2023 12:32:12 +0100
Subject: [PATCH] drop dependency on gnugrep

---
 default.nix |  2 --
 direnvrc    | 12 +++++++-----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/default.nix b/default.nix
index b287a36..f360b69 100644
--- a/default.nix
+++ b/default.nix
@@ -7,8 +7,6 @@ stdenv.mkDerivation {
 
   postPatch = ''
     sed -i "2iNIX_BIN_PREFIX=${nix}/bin/" direnvrc
-    substituteInPlace direnvrc \
-      --replace "grep" "${gnugrep}/bin/grep"
   '';
 
   installPhase = ''
diff --git a/direnvrc b/direnvrc
index 6e622ea..c8f54f9 100644
--- a/direnvrc
+++ b/direnvrc
@@ -280,12 +280,14 @@ use_flake() {
       local flake_input_paths
       mkdir -p "$flake_inputs"
       flake_input_paths=$("${NIX_BIN_PREFIX}nix" flake archive \
-        --json \
+        --json --no-write-lock-file \
         --extra-experimental-features "nix-command flakes" \
-        --no-write-lock-file \
-        "$flake_dir" | grep -E -o '/nix/store/[^"]+')
-      for path in $flake_input_paths; do
-        _nix_add_gcroot "$path" "${flake_inputs}/${path##*/}"
+        "$flake_dir")
+
+      while [[ "$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}/}"
       done
 
       log_status "nix-direnv: renewed cache"