feat: indent key-value in a few scenarios only

[kamadorueda]

version = let
  commit = inputs.self.shortRev or "dirty";
in
  "${builtins.substring 0 8 date}_${commit}";

instead of

version =
  let
    commit = inputs.self.shortRev or "dirty";
  in
    "${builtins.substring 0 8 date}_${commit}";

• This applies to function calls as well (or at least to those with attrset argument).
• This applies to nested let bindings as well

diff --git a/doc/doc-support/lib-function-locations.nix b/doc/doc-support/lib-function-locations.nix
index 7eeb76b1e..3ebd00480 100644
--- a/doc/doc-support/lib-function-locations.nix
+++ b/doc/doc-support/lib-function-locations.nix
@@ -44,14 +44,13 @@ let
       functions;
 
   locatedlibsets = libs: builtins.map flattenedLibSubset (libset libs);
-  removeFilenamePrefix = prefix: filename:
-    let
-      prefixLen = (builtins.stringLength prefix) + 1;
-      # +1 to remove the leading /
-      filenameLen = builtins.stringLength filename;
-      substr = builtins.substring prefixLen filenameLen filename;
-    in
-      substr;
+  removeFilenamePrefix = prefix: filename: let
+    prefixLen = (builtins.stringLength prefix) + 1;
+    # +1 to remove the leading /
+    filenameLen = builtins.stringLength filename;
+    substr = builtins.substring prefixLen filenameLen filename;
+  in
+    substr;

diff --git a/lib/systems/architectures.nix b/lib/systems/architectures.nix
index c1f66fdf9..1b06a52d8 100644
--- a/lib/systems/architectures.nix
+++ b/lib/systems/architectures.nix
@@ -88,21 +88,20 @@ rec {
     loongson2f = [ ];
   };
 
-  predicates =
-    let
-      featureSupport = feature: x: builtins.elem feature features.${x} or [ ];
-    in
-      {
-        sse3Support = featureSupport "sse3";
-        ssse3Support = featureSupport "ssse3";
-        sse4_1Support = featureSupport "sse4_1";
-        sse4_2Support = featureSupport "sse4_2";
-        sse4_aSupport = featureSupport "sse4a";
-        avxSupport = featureSupport "avx";
-        avx2Support = featureSupport "avx2";
-        avx512Support = featureSupport "avx512";
-        aesSupport = featureSupport "aes";
-        fmaSupport = featureSupport "fma";
-        fma4Support = featureSupport "fma4";
-      };
+  predicates = let
+    featureSupport = feature: x: builtins.elem feature features.${x} or [ ];
+  in
+    {
+      sse3Support = featureSupport "sse3";
+      ssse3Support = featureSupport "ssse3";
+      sse4_1Support = featureSupport "sse4_1";
+      sse4_2Support = featureSupport "sse4_2";
+      sse4_aSupport = featureSupport "sse4a";
+      avxSupport = featureSupport "avx";
+      avx2Support = featureSupport "avx2";
+      avx512Support = featureSupport "avx512";
+      aesSupport = featureSupport "aes";
+      fmaSupport = featureSupport "fma";
+      fma4Support = featureSupport "fma4";
+    };
 }