cuda-modules/generic-builders/manifest: add to brokenConditions, simplify src, break out comments in postPatch

pkgs/development/cuda-modules/generic-builders/manifest.nix

@@ -128,7 +128,18 @@ backendStdenv.mkDerivation (finalAttrs: {
   # brokenConditions :: AttrSet Bool
   # Sets `meta.broken = true` if any of the conditions are true.
   # Example: Broken on a specific version of CUDA or when a dependency has a specific version.
-  brokenConditions = { };
+  brokenConditions = {
+    # Unclear how this is handled by Nix internals.
+    "Duplicate entries in outputs" = finalAttrs.outputs != lists.unique finalAttrs.outputs;
+    # Typically this results in the static output being empty, as all libraries are moved
+    # back to the lib output.
+    "lib output follows static output" =
+      let
+        libIndex = lists.findFirstIndex (x: x == "lib") null finalAttrs.outputs;
+        staticIndex = lists.findFirstIndex (x: x == "static") null finalAttrs.outputs;
+      in
+      libIndex != null && staticIndex != null && libIndex > staticIndex;
+  };
 
   # badPlatformsConditions :: AttrSet Bool
   # Sets `meta.badPlatforms = meta.platforms` if any of the conditions are true.
@@ -138,44 +149,43 @@ backendStdenv.mkDerivation (finalAttrs: {
   };
 
   # src :: Optional Derivation
-  src = trivial.pipe redistArch [
-    # If redistArch doesn't exist in redistribRelease, return null.
-    (redistArch: redistribRelease.${redistArch} or null)
-    # If the release is non-null, fetch the source; otherwise, return null.
-    (trivial.mapNullable (
-      { relative_path, sha256, ... }:
-      fetchurl {
-        url = "https://developer.download.nvidia.com/compute/${redistName}/redist/${relative_path}";
-        inherit sha256;
-      }
-    ))
-  ];
-
-  # Handle the pkg-config files:
-  # 1. No FHS
-  # 2. Location expected by the pkg-config wrapper
-  # 3. Generate unversioned names too
-  postPatch = ''
-    for path in pkg-config pkgconfig ; do
-      [[ -d "$path" ]] || continue
-      mkdir -p share/pkgconfig
-      mv "$path"/* share/pkgconfig/
-      rmdir "$path"
-    done
-
-    for pc in share/pkgconfig/*.pc ; do
-      sed -i \
-        -e "s|^cudaroot\s*=.*\$|cudaroot=''${!outputDev}|" \
-        -e "s|^libdir\s*=.*/lib\$|libdir=''${!outputLib}/lib|" \
-        -e "s|^includedir\s*=.*/include\$|includedir=''${!outputDev}/include|" \
-        "$pc"
-    done
+  # If redistArch doesn't exist in redistribRelease, return null.
+  src = trivial.mapNullable (
+    { relative_path, sha256, ... }:
+    fetchurl {
+      url = "https://developer.download.nvidia.com/compute/${redistName}/redist/${relative_path}";
+      inherit sha256;
+    }
+  ) (redistribRelease.${redistArch} or null);
 
+  postPatch =
+    # Pkg-config's setup hook expects configuration files in $out/share/pkgconfig
+    ''
+      for path in pkg-config pkgconfig; do
+        [[ -d "$path" ]] || continue
+        mkdir -p share/pkgconfig
+        mv "$path"/* share/pkgconfig/
+        rmdir "$path"
+      done
+    ''
+    # Rewrite FHS paths with store paths
+    # NOTE: output* fall back to out if the corresponding output isn't defined.
+    + ''
+      for pc in share/pkgconfig/*.pc; do
+        sed -i \
+          -e "s|^cudaroot\s*=.*\$|cudaroot=''${!outputDev}|" \
+          -e "s|^libdir\s*=.*/lib\$|libdir=''${!outputLib}/lib|" \
+          -e "s|^includedir\s*=.*/include\$|includedir=''${!outputDev}/include|" \
+          "$pc"
+      done
+    ''
+    # Generate unversioned names.
     # E.g. cuda-11.8.pc -> cuda.pc
-    for pc in share/pkgconfig/*-"$majorMinorVersion.pc" ; do
-      ln -s "$(basename "$pc")" "''${pc%-$majorMinorVersion.pc}".pc
-    done
-  '';
+    + ''
+      for pc in share/pkgconfig/*-"$majorMinorVersion.pc"; do
+        ln -s "$(basename "$pc")" "''${pc%-$majorMinorVersion.pc}".pc
+      done
+    '';
 
   env.majorMinorVersion = cudaMajorMinorVersion;
 
@@ -234,7 +244,7 @@ backendStdenv.mkDerivation (finalAttrs: {
     # Handle the existence of libPath, which requires us to re-arrange the lib directory
     + strings.optionalString (libPath != null) ''
       full_lib_path="lib/${libPath}"
-      if [[ ! -d "$full_lib_path" ]] ; then
+      if [[ ! -d "$full_lib_path" ]]; then
         echo "${finalAttrs.pname}: '$full_lib_path' does not exist, only found:" >&2
         find lib/ -mindepth 1 -maxdepth 1 >&2
         echo "This release might not support your CUDA version" >&2
@@ -265,9 +275,9 @@ backendStdenv.mkDerivation (finalAttrs: {
   postInstallCheck = ''
     echo "Executing postInstallCheck"
 
-    if [[ -z "''${allowFHSReferences-}" ]] ; then
+    if [[ -z "''${allowFHSReferences-}" ]]; then
       mapfile -t outputPaths < <(for o in $(getAllOutputNames); do echo "''${!o}"; done)
-      if grep --max-count=5 --recursive --exclude=LICENSE /usr/ "''${outputPaths[@]}" ; then
+      if grep --max-count=5 --recursive --exclude=LICENSE /usr/ "''${outputPaths[@]}"; then
         echo "Detected references to /usr" >&2
         exit 1
       fi