Merge remote-tracking branch 'origin/2.27-maintenance' into mergify/bp/2.27-maintenance/pr-12869

flake.nix

@@ -170,7 +170,7 @@
               {
                 otherSplices = final.generateSplicesForMkScope "nixDependencies";
                 f = import ./packaging/dependencies.nix {
-                  inherit inputs stdenv;
+                  inherit stdenv;
                   pkgs = final;
                 };
               };

packaging/dependencies.nix

@@ -1,33 +1,14 @@
 # These overrides are applied to the dependencies of the Nix components.
 
 {
-  # Flake inputs; used for sources
-  inputs,
-
   # The raw Nixpkgs, not affected by this scope
   pkgs,
 
   stdenv,
 }:
 
-let
-  prevStdenv = stdenv;
-in
-
 let
   inherit (pkgs) lib;
-
-  stdenv = if prevStdenv.isDarwin && prevStdenv.isx86_64 then darwinStdenv else prevStdenv;
-
-  # Fix the following error with the default x86_64-darwin SDK:
-  #
-  #     error: aligned allocation function of type 'void *(std::size_t, std::align_val_t)' is only available on macOS 10.13 or newer
-  #
-  # Despite the use of the 10.13 deployment target here, the aligned
-  # allocation function Clang uses with this setting actually works
-  # all the way back to 10.6.
-  darwinStdenv = pkgs.overrideSDK prevStdenv { darwinMinVersion = "10.13"; };
-
 in
 scope: {
   inherit stdenv;
@@ -65,13 +46,12 @@ scope: {
         installPhase = lib.replaceStrings [ "--without-python" ] [ "" ] old.installPhase;
       });
 
-  libgit2 = pkgs.libgit2.overrideAttrs (
+  libgit2 =
-    attrs:
+    if lib.versionAtLeast pkgs.libgit2.version "1.9.0" then
-    {
+      pkgs.libgit2
-      cmakeFlags = attrs.cmakeFlags or [ ] ++ [ "-DUSE_SSH=exec" ];
+    else
-    }
+      pkgs.libgit2.overrideAttrs (attrs: {
         # libgit2: Nixpkgs 24.11 has < 1.9.0, which needs our patches
-    // lib.optionalAttrs (!lib.versionAtLeast pkgs.libgit2.version "1.9.0") {
         nativeBuildInputs =
           attrs.nativeBuildInputs or [ ]
           # gitMinimal does not build on Windows. See packbuilder patch.
@@ -98,6 +78,5 @@ scope: {
             # binary patch; see `prePatch`
             ./patches/libgit2-packbuilder-callback-interruptible.patch
           ];
-    }
+      });
-  );
 }

src/libfetchers/git.cc

@@ -532,14 +532,20 @@ struct GitInputScheme : InputScheme
         return *head;
     }
 
-    static MakeNotAllowedError makeNotAllowedError(std::string url)
+    static MakeNotAllowedError makeNotAllowedError(std::filesystem::path repoPath)
     {
-        return [url{std::move(url)}](const CanonPath & path) -> RestrictedPathError
+        return [repoPath{std::move(repoPath)}](const CanonPath & path) -> RestrictedPathError {
-        {
+            if (nix::pathExists(repoPath / path.rel()))
-            if (nix::pathExists(path.abs()))
+                return RestrictedPathError(
-                return RestrictedPathError("access to path '%s' is forbidden because it is not under Git control; maybe you should 'git add' it to the repository '%s'?", path, url);
+                    "Path '%1%' in the repository %2% is not tracked by Git.\n"
+                    "\n"
+                    "To make it visible to Nix, run:\n"
+                    "\n"
+                    "git -C %2% add \"%1%\"",
+                    path.rel(),
+                    repoPath);
             else
-                return RestrictedPathError("path '%s' does not exist in Git repository '%s'", path, url);
+                return RestrictedPathError("Path '%s' does not exist in Git repository %s.", path.rel(), repoPath);
         };
     }
 
@@ -747,7 +753,7 @@ struct GitInputScheme : InputScheme
         ref<SourceAccessor> accessor =
             repo->getAccessor(repoInfo.workdirInfo,
                 exportIgnore,
-                makeNotAllowedError(repoInfo.locationToArg()));
+                makeNotAllowedError(repoPath));
 
         /* If the repo has submodules, return a mounted input accessor
            consisting of the accessor for the top-level repo and the

src/libutil/file-system.cc

@@ -29,7 +29,17 @@
 
 namespace nix {
 
-namespace fs { using namespace std::filesystem; }
+namespace fs {
+  using namespace std::filesystem;
+
+  bool symlink_exists(const std::filesystem::path & path) {
+      try {
+          return std::filesystem::exists(std::filesystem::symlink_status(path));
+      } catch (const std::filesystem::filesystem_error & e) {
+          throw SysError("cannot check existence of %1%", path);
+      }
+  }
+}
 
 bool isAbsolute(PathView path)
 {

src/libutil/file-system.hh

@@ -134,6 +134,7 @@ bool pathExists(const Path & path);
 namespace fs {
 
 /**
+ * TODO: we may actually want to use pathExists instead of this function
  *  ```
  *  symlink_exists(p) = std::filesystem::exists(std::filesystem::symlink_status(p))
  *  ```
@@ -142,9 +143,7 @@ namespace fs {
  *  std::filesystem::exists(p) = std::filesystem::exists(std::filesystem::status(p))
  *  ```
  */
-inline bool symlink_exists(const std::filesystem::path & path) {
+bool symlink_exists(const std::filesystem::path & path);
-    return std::filesystem::exists(std::filesystem::symlink_status(path));
-}
 
 } // namespace fs