mass rewrite of find parameters to cross-platform style

Fixes #9044, close #9667. Thanks to @taku0 for suggesting this solution.
Now we have no modes starting with `/` or `+`.

Rewrite the `-perm` parameters of find:
 - completely safe: rewrite `/0100` and `+100` to `-0100`,
 - slightly semantics-changing: rewrite `+111` to `-0100`.
I cross-verified the `find` manual pages for Linux, Darwin, FreeBSD.

2 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/build-support/builder-defs/builder-defs.nix b/pkgs/build-support/builder-defs/builder-defs.nix
index e7c64501614c..6ea4ec86c480 100644
--- a/pkgs/build-support/builder-defs/builder-defs.nix
+++ b/pkgs/build-support/builder-defs/builder-defs.nix
@@ -569,7 +569,7 @@ let inherit (builtins) head tail trace; in
      # Interpreters that are already in the store are left untouched.
          echo "patching script interpreter paths"
          local f
-         for f in $(find "${dir}" -xtype f -perm /0100); do
+         for f in $(find "${dir}" -xtype f -perm -0100); do
              local oldPath=$(sed -ne '1 s,^#![ ]*\([^ ]*\).*$,\1,p' "$f")
              if test -n "$oldPath" -a "''${oldPath:0:''${#NIX_STORE}}" != "$NIX_STORE"; then
                  local newPath=$(type -P $(basename $oldPath) || true)
diff --git a/pkgs/build-support/setup-hooks/patch-shebangs.sh b/pkgs/build-support/setup-hooks/patch-shebangs.sh
index 44ebad0d593b..152755992f68 100644
--- a/pkgs/build-support/setup-hooks/patch-shebangs.sh
+++ b/pkgs/build-support/setup-hooks/patch-shebangs.sh
@@ -18,7 +18,7 @@ patchShebangs() {
     local oldInterpreterLine
     local newInterpreterLine
 
-    find "$dir" -type f -perm /0100 | while read f; do
+    find "$dir" -type f -perm -0100 | while read f; do
         if [ "$(head -1 "$f" | head -c +2)" != '#!' ]; then
             # missing shebang => not a script
             continue