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-rw-r--r--pkgs/build-support/rust/build-rust-crate/build-crate.nix3
-rw-r--r--pkgs/build-support/rust/build-rust-crate/test/default.nix18
2 files changed, 11 insertions, 10 deletions
diff --git a/pkgs/build-support/rust/build-rust-crate/build-crate.nix b/pkgs/build-support/rust/build-rust-crate/build-crate.nix
index 4e2e2af1aa7..dec49d24f52 100644
--- a/pkgs/build-support/rust/build-rust-crate/build-crate.nix
+++ b/pkgs/build-support/rust/build-rust-crate/build-crate.nix
@@ -55,9 +55,6 @@
     elif [[ -e src/lib.rs ]]; then
        build_lib src/lib.rs
        ${lib.optionalString buildTests "build_lib_test src/lib.rs"}
-    elif [[ -e "src/$LIB_NAME.rs" ]]; then
-       build_lib src/$LIB_NAME.rs
-       ${lib.optionalString buildTests ''build_lib_test "src/$LIB_NAME.rs"''}
     fi
 
 
diff --git a/pkgs/build-support/rust/build-rust-crate/test/default.nix b/pkgs/build-support/rust/build-rust-crate/test/default.nix
index f0f1ed4d1eb..aa20bd03b18 100644
--- a/pkgs/build-support/rust/build-rust-crate/test/default.nix
+++ b/pkgs/build-support/rust/build-rust-crate/test/default.nix
@@ -92,7 +92,17 @@ let
     cases = {
       libPath =  { libPath = "src/my_lib.rs"; src = mkLib "src/my_lib.rs"; };
       srcLib =  { src = mkLib "src/lib.rs"; };
-      customLibName =  { libName = "test_lib"; src = mkLib "src/test_lib.rs"; };
+
+      # This used to be supported by cargo but as of 1.40.0 I can't make it work like that with just cargo anymore.
+      # This might be a regression or deprecated thing they finally removed…
+      # customLibName =  { libName = "test_lib"; src = mkLib "src/test_lib.rs"; };
+      # rustLibTestsCustomLibName = {
+      #   libName = "test_lib";
+      #   src = mkTestFile "src/test_lib.rs" "foo";
+      #   buildTests = true;
+      #   expectedTestOutputs = [ "test foo ... ok" ];
+      # };
+
       customLibNameAndLibPath =  { libName = "test_lib"; libPath = "src/best-lib.rs"; src = mkLib "src/best-lib.rs"; };
       crateBinWithPath =  { crateBin = [{ name = "test_binary1"; path = "src/foobar.rs"; }]; src = mkBin "src/foobar.rs"; };
       crateBinNoPath1 =  { crateBin = [{ name = "my-binary2"; }]; src = mkBin "src/my_binary2.rs"; };
@@ -122,12 +132,6 @@ let
         buildTests = true;
         expectedTestOutputs = [ "test baz ... ok" ];
       };
-      rustLibTestsCustomLibName = {
-        libName = "test_lib";
-        src = mkTestFile "src/test_lib.rs" "foo";
-        buildTests = true;
-        expectedTestOutputs = [ "test foo ... ok" ];
-      };
       rustLibTestsCustomLibPath = {
         libPath = "src/test_path.rs";
         src = mkTestFile "src/test_path.rs" "bar";