chore: format repo using treefmt-nix and nixfmt-rfc-style

raspberry-pi/4/apply-overlays-dtmerge.nix

@@ -1,48 +1,67 @@
 # modification of nixpkgs deviceTree.applyOverlays to resolve https://github.com/NixOS/nixpkgs/issues/125354
 # derived from https://github.com/NixOS/nixpkgs/blob/916ca8f2b0c208def051f8ea9760c534a40309db/pkgs/os-specific/linux/device-tree/default.nix
-{ lib, stdenvNoCC, dtc, libraspberrypi }:
+{
+  lib,
+  stdenvNoCC,
+  dtc,
+  libraspberrypi,
+}:
 
-with lib; (base: overlays': stdenvNoCC.mkDerivation {
-  name = "device-tree-overlays";
-  nativeBuildInputs = [ dtc libraspberrypi ];
-  buildCommand = let
-    overlays = toList overlays';
-  in ''
-    mkdir -p $out
-    cd "${base}"
-    find . -type f -name '*.dtb' -print0 \
-      | xargs -0 cp -v --no-preserve=mode --target-directory "$out" --parents
+with lib;
+(
+  base: overlays':
+  stdenvNoCC.mkDerivation {
+    name = "device-tree-overlays";
+    nativeBuildInputs = [
+      dtc
+      libraspberrypi
+    ];
+    buildCommand =
+      let
+        overlays = toList overlays';
+      in
+      ''
+        mkdir -p $out
+        cd "${base}"
+        find . -type f -name '*.dtb' -print0 \
+          | xargs -0 cp -v --no-preserve=mode --target-directory "$out" --parents
 
-    for dtb in $(find "$out" -type f -name '*.dtb'); do
-      dtbCompat=$(fdtget -t s "$dtb" / compatible 2>/dev/null || true)
-      # skip files without `compatible` string
-      test -z "$dtbCompat" && continue
+        for dtb in $(find "$out" -type f -name '*.dtb'); do
+          dtbCompat=$(fdtget -t s "$dtb" / compatible 2>/dev/null || true)
+          # skip files without `compatible` string
+          test -z "$dtbCompat" && continue
 
-      ${flip (concatMapStringsSep "\n") overlays (o: ''
-      overlayCompat="$(fdtget -t s "${o.dtboFile}" / compatible)"
+          ${flip (concatMapStringsSep "\n") overlays (o: ''
+            overlayCompat="$(fdtget -t s "${o.dtboFile}" / compatible)"
 
-      # skip incompatible and non-matching overlays
-      if [[ ! "$dtbCompat" =~ "$overlayCompat" ]]; then
-        echo "Skipping overlay ${o.name}: incompatible with $(basename "$dtb")"
-      elif ${if ((o.filter or null) == null) then "false" else ''
-        [[ "''${dtb//${o.filter}/}" ==  "$dtb" ]]
-      ''}
-      then
-        echo "Skipping overlay ${o.name}: filter does not match $(basename "$dtb")"
-      else
-        echo -n "Applying overlay ${o.name} to $(basename "$dtb")... "
-        mv "$dtb"{,.in}
+            # skip incompatible and non-matching overlays
+            if [[ ! "$dtbCompat" =~ "$overlayCompat" ]]; then
+              echo "Skipping overlay ${o.name}: incompatible with $(basename "$dtb")"
+            elif ${
+              if ((o.filter or null) == null) then
+                "false"
+              else
+                ''
+                  [[ "''${dtb//${o.filter}/}" ==  "$dtb" ]]
+                ''
+            }
+            then
+              echo "Skipping overlay ${o.name}: filter does not match $(basename "$dtb")"
+            else
+              echo -n "Applying overlay ${o.name} to $(basename "$dtb")... "
+              mv "$dtb"{,.in}
 
-        # dtmerge requires a .dtbo ext for dtbo files, otherwise it adds it to the given file implicitly
-        dtboWithExt="$TMPDIR/$(basename "${o.dtboFile}").dtbo"
-        cp -r ${o.dtboFile} "$dtboWithExt"
+              # dtmerge requires a .dtbo ext for dtbo files, otherwise it adds it to the given file implicitly
+              dtboWithExt="$TMPDIR/$(basename "${o.dtboFile}").dtbo"
+              cp -r ${o.dtboFile} "$dtboWithExt"
 
-        dtmerge "$dtb.in" "$dtb" "$dtboWithExt"
+              dtmerge "$dtb.in" "$dtb" "$dtboWithExt"
 
-        echo "ok"
-        rm "$dtb.in" "$dtboWithExt"
-      fi
-      '')}
+              echo "ok"
+              rm "$dtb.in" "$dtboWithExt"
+            fi
+          '')}
 
-    done'';
-})
+        done'';
+  }
+)