diff --git a/.github/workflows/workflow.yaml b/.github/workflows/workflow.yaml
index 92f0e334..fdb66ac3 100644
--- a/.github/workflows/workflow.yaml
+++ b/.github/workflows/workflow.yaml
@@ -27,8 +27,14 @@ jobs:
           - true
           - false
         withNixRemote:
-          - true
+          # FIXME: disable nix-remote checks as they don't work
+          #        see https://github.com/tweag/rules_nixpkgs/issues/564
+          #- true
           - false
+        exclude:
+          # skip nix remote jobs on MacOS
+          - os: macos-12
+            withNixRemote: true
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
@@ -39,7 +45,7 @@ jobs:
         with:
           buildbuddy_api_key: ${{ secrets.BUILDBUDDY_API_KEY }}
       - name: Start remote Nix server
-        if: matrix.withNixRemote && matrix.os == 'ubuntu-latest'
+        if: matrix.withNixRemote
         run: |
           # Generate temporary SSH keys.
           mkdir -p $HOME/.ssh
@@ -52,22 +58,22 @@ jobs:
           cp .github/nix-server/keys/* $HOME/.ssh/
 
           sudo cp .github/nix-server/config /etc/ssh/ssh_config
+
+          echo "Setting BAZEL_NIX_REMOTE env variable"
+          echo BAZEL_NIX_REMOTE=nix-server >> "$GITHUB_ENV"
       - name: Build & test
         env:
           BZLMOD_ENABLED: ${{ matrix.bzlmodEnabled }}
-          NIX_REMOTE_ENABLED: matrix.withNixRemote && matrix.os == 'ubuntu-latest'
         run: |
-          if [ "$NIX_REMOTE_ENABLED" = "true" ]; then
-            echo "Setting BAZEL_NIX_REMOTE env variable"
-            export BAZEL_NIX_REMOTE=nix-server
-          fi
-
           nix-shell --pure \
             --keep GITHUB_STEP_SUMMARY \
             --keep GITHUB_REPOSITORY \
             --keep BZLMOD_ENABLED \
             --keep BAZEL_NIX_REMOTE \
             --run 'bash .github/build-and-test'
+      - name: Setup tmate session
+        if: ${{ failure() }}
+        uses: mxschmitt/action-tmate@v3
   test-examples:
     name: Build & Test - Examples
     strategy:
diff --git a/WORKSPACE b/WORKSPACE
index bf093a90..5474e6cd 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -28,8 +28,8 @@ load(
 )
 
 nixpkgs_package(
-    name = "nix_2_10",
-    attribute_path = "nixVersions.nix_2_10",
+    name = "nix_2_18",
+    attribute_path = "nixVersions.nix_2_18",
     repositories = {"nixpkgs": "@nixpkgs"},
 )
 
diff --git a/nix/flake.lock b/nix/flake.lock
index 376c612e..9037a9db 100644
--- a/nix/flake.lock
+++ b/nix/flake.lock
@@ -21,11 +21,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
         "systems": "systems_2"
       },
       "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
         "type": "github"
       },
       "original": {
@@ -60,11 +60,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1698974481,
-        "narHash": "sha256-yPncV9Ohdz1zPZxYHQf47S8S0VrnhV7nNhCawY46hDA=",
+        "lastModified": 1703863825,
+        "narHash": "sha256-rXwqjtwiGKJheXB43ybM8NwWB8rO2dSRrEqes0S7F5Y=",
         "owner": "nix-community",
         "repo": "nix-github-actions",
-        "rev": "4bb5e752616262457bc7ca5882192a564c0472d2",
+        "rev": "5163432afc817cf8bd1f031418d1869e4c9d5547",
         "type": "github"
       },
       "original": {
@@ -75,16 +75,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1699099776,
-        "narHash": "sha256-X09iKJ27mGsGambGfkKzqvw5esP1L/Rf8H3u3fCqIiU=",
+        "lastModified": 1720386169,
+        "narHash": "sha256-NGKVY4PjzwAa4upkGtAMz1npHGoRzWotlSnVlqI40mo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "85f1ba3e51676fa8cc604a3d863d729026a6b8eb",
+        "rev": "194846768975b7ad2c4988bdb82572c00222c0d7",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -100,11 +100,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1699321798,
-        "narHash": "sha256-LUoC+M1SaeZyhrT673FPVivq6Wn1Us6rjaG6EkUmUuw=",
+        "lastModified": 1719850884,
+        "narHash": "sha256-UU/lVTHFx0GpEkihoLJrMuM9DcuhZmNe3db45vshSyI=",
         "owner": "nix-community",
         "repo": "poetry2nix",
-        "rev": "bf0601d5d9ae7334fa80f5f7c9648009390046ca",
+        "rev": "42262f382c68afab1113ebd1911d0c93822d756e",
         "type": "github"
       },
       "original": {
@@ -173,11 +173,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1698438538,
-        "narHash": "sha256-AWxaKTDL3MtxaVTVU5lYBvSnlspOS0Fjt8GxBgnU0Do=",
+        "lastModified": 1719749022,
+        "narHash": "sha256-ddPKHcqaKCIFSFc/cvxS14goUhCOAwsM1PbMr0ZtHMg=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "5deb8dc125a9f83b65ca86cf0c8167c46593e0b1",
+        "rev": "8df5ff62195d4e67e2264df0b7f5e8c9995fd0bd",
         "type": "github"
       },
       "original": {
diff --git a/nix/flake.nix b/nix/flake.nix
index 2084490e..f8017576 100644
--- a/nix/flake.nix
+++ b/nix/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
     flake-compat = {
       url = "github:edolstra/flake-compat";
       flake = false;
diff --git a/testing/go-bzlmod/tests/cc-patched.nix b/testing/go-bzlmod/tests/cc-patched.nix
index 2dade31e..bf86991b 100644
--- a/testing/go-bzlmod/tests/cc-patched.nix
+++ b/testing/go-bzlmod/tests/cc-patched.nix
@@ -36,10 +36,12 @@ let
         echo "-F${Security}/Library/Frameworks" >> $out/nix-support/cc-cflags
         echo "-F${Foundation}/Library/Frameworks" >> $out/nix-support/cc-cflags
         echo "-L${pkgs.llvmPackages.libcxx}/lib" >> $out/nix-support/cc-cflags
-        echo "-L${pkgs.llvmPackages.libcxxabi}/lib" >> $out/nix-support/cc-cflags
         echo "-L${pkgs.libiconv}/lib" >> $out/nix-support/cc-cflags
         echo "-L${pkgs.darwin.libobjc}/lib" >> $out/nix-support/cc-cflags
         echo "-resource-dir=${pkgs.stdenv.cc}/resource-root" >> $out/nix-support/cc-cflags
+      '' +
+      pkgs.lib.optionalString (pkgs.llvmPackages ? libcxxabi) ''
+        echo "-L${pkgs.llvmPackages.libcxxabi}/lib" >> $out/nix-support/cc-cflags
       '';
     };
 in
diff --git a/testing/python/poetry.lock b/testing/python/poetry.lock
index 0f87a6cc..484efb35 100644
--- a/testing/python/poetry.lock
+++ b/testing/python/poetry.lock
@@ -2,24 +2,24 @@
 
 [[package]]
 name = "blinker"
-version = "1.6.2"
+version = "1.8.2"
 description = "Fast, simple object-to-object and broadcast signaling"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "blinker-1.6.2-py3-none-any.whl", hash = "sha256:c3d739772abb7bc2860abf5f2ec284223d9ad5c76da018234f6f50d6f31ab1f0"},
-    {file = "blinker-1.6.2.tar.gz", hash = "sha256:4afd3de66ef3a9f8067559fb7a1cbe555c17dcbe15971b05d1b625c3e7abe213"},
+    {file = "blinker-1.8.2-py3-none-any.whl", hash = "sha256:1779309f71bf239144b9399d06ae925637cf6634cf6bd131104184531bf67c01"},
+    {file = "blinker-1.8.2.tar.gz", hash = "sha256:8f77b09d3bf7c795e969e9486f39c2c5e9c39d4ee07424be2bc594ece9642d83"},
 ]
 
 [[package]]
 name = "click"
-version = "8.1.3"
+version = "8.1.7"
 description = "Composable command line interface toolkit"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "click-8.1.3-py3-none-any.whl", hash = "sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48"},
-    {file = "click-8.1.3.tar.gz", hash = "sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e"},
+    {file = "click-8.1.7-py3-none-any.whl", hash = "sha256:ae74fb96c20a0277a1d615f1e4d73c8414f5a98db8b799a7931d1582f3390c28"},
+    {file = "click-8.1.7.tar.gz", hash = "sha256:ca9853ad459e787e2192211578cc907e7594e294c7ccc834310722b41b9ca6de"},
 ]
 
 [package.dependencies]
@@ -61,43 +61,43 @@ dotenv = ["python-dotenv"]
 
 [[package]]
 name = "importlib-metadata"
-version = "6.0.0"
+version = "8.0.0"
 description = "Read metadata from Python packages"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "importlib_metadata-6.0.0-py3-none-any.whl", hash = "sha256:7efb448ec9a5e313a57655d35aa54cd3e01b7e1fbcf72dce1bf06119420f5bad"},
-    {file = "importlib_metadata-6.0.0.tar.gz", hash = "sha256:e354bedeb60efa6affdcc8ae121b73544a7aa74156d047311948f6d711cd378d"},
+    {file = "importlib_metadata-8.0.0-py3-none-any.whl", hash = "sha256:15584cf2b1bf449d98ff8a6ff1abef57bf20f3ac6454f431736cd3e660921b2f"},
+    {file = "importlib_metadata-8.0.0.tar.gz", hash = "sha256:188bd24e4c346d3f0a933f275c2fec67050326a856b9a359881d7c2a697e8812"},
 ]
 
 [package.dependencies]
 zipp = ">=0.5"
 
 [package.extras]
-docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
+doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
 perf = ["ipython"]
-testing = ["flake8 (<5)", "flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pyfakefs", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)", "pytest-perf (>=0.9.2)"]
+test = ["flufl.flake8", "importlib-resources (>=1.3)", "jaraco.test (>=5.4)", "packaging", "pyfakefs", "pytest (>=6,!=8.1.*)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)", "pytest-mypy", "pytest-perf (>=0.9.2)", "pytest-ruff (>=0.2.1)"]
 
 [[package]]
 name = "itsdangerous"
-version = "2.1.2"
+version = "2.2.0"
 description = "Safely pass data to untrusted environments and back."
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "itsdangerous-2.1.2-py3-none-any.whl", hash = "sha256:2c2349112351b88699d8d4b6b075022c0808887cb7ad10069318a8b0bc88db44"},
-    {file = "itsdangerous-2.1.2.tar.gz", hash = "sha256:5dbbc68b317e5e42f327f9021763545dc3fc3bfe22e6deb96aaf1fc38874156a"},
+    {file = "itsdangerous-2.2.0-py3-none-any.whl", hash = "sha256:c6242fc49e35958c8b15141343aa660db5fc54d4f13a1db01a3f5891b98700ef"},
+    {file = "itsdangerous-2.2.0.tar.gz", hash = "sha256:e0050c0b7da1eea53ffaf149c0cfbb5c6e2e2b69c4bef22c81fa6eb73e5f6173"},
 ]
 
 [[package]]
 name = "jinja2"
-version = "3.1.2"
+version = "3.1.4"
 description = "A very fast and expressive template engine."
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "Jinja2-3.1.2-py3-none-any.whl", hash = "sha256:6088930bfe239f0e6710546ab9c19c9ef35e29792895fed6e6e31a023a182a61"},
-    {file = "Jinja2-3.1.2.tar.gz", hash = "sha256:31351a702a408a9e7595a8fc6150fc3f43bb6bf7e319770cbc0db9df9437e852"},
+    {file = "jinja2-3.1.4-py3-none-any.whl", hash = "sha256:bc5dd2abb727a5319567b7a813e6a2e7318c39f4f487cfe6c89c6f9c7d25197d"},
+    {file = "jinja2-3.1.4.tar.gz", hash = "sha256:4a3aee7acbbe7303aede8e9648d13b8bf88a429282aa6122a993f0ac800cb369"},
 ]
 
 [package.dependencies]
@@ -108,61 +108,71 @@ i18n = ["Babel (>=2.7)"]
 
 [[package]]
 name = "markupsafe"
-version = "2.1.2"
+version = "2.1.5"
 description = "Safely add untrusted strings to HTML/XML markup."
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "MarkupSafe-2.1.2-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:665a36ae6f8f20a4676b53224e33d456a6f5a72657d9c83c2aa00765072f31f7"},
-    {file = "MarkupSafe-2.1.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:340bea174e9761308703ae988e982005aedf427de816d1afe98147668cc03036"},
-    {file = "MarkupSafe-2.1.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:22152d00bf4a9c7c83960521fc558f55a1adbc0631fbb00a9471e097b19d72e1"},
-    {file = "MarkupSafe-2.1.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:28057e985dace2f478e042eaa15606c7efccb700797660629da387eb289b9323"},
-    {file = "MarkupSafe-2.1.2-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:ca244fa73f50a800cf8c3ebf7fd93149ec37f5cb9596aa8873ae2c1d23498601"},
-    {file = "MarkupSafe-2.1.2-cp310-cp310-musllinux_1_1_aarch64.whl", hash = "sha256:d9d971ec1e79906046aa3ca266de79eac42f1dbf3612a05dc9368125952bd1a1"},
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+    {file = "MarkupSafe-2.1.5.tar.gz", hash = "sha256:d283d37a890ba4c1ae73ffadf8046435c76e7bc2247bbb63c00bd1a709c6544b"},
 ]
 
 [[package]]
@@ -184,18 +194,18 @@ watchdog = ["watchdog (>=2.3)"]
 
 [[package]]
 name = "zipp"
-version = "3.15.0"
+version = "3.19.2"
 description = "Backport of pathlib-compatible object wrapper for zip files"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "zipp-3.15.0-py3-none-any.whl", hash = "sha256:48904fc76a60e542af151aded95726c1a5c34ed43ab4134b597665c86d7ad556"},
-    {file = "zipp-3.15.0.tar.gz", hash = "sha256:112929ad649da941c23de50f356a2b5570c954b65150642bccdd66bf194d224b"},
+    {file = "zipp-3.19.2-py3-none-any.whl", hash = "sha256:f091755f667055f2d02b32c53771a7a6c8b47e1fdbc4b72a8b9072b3eef8015c"},
+    {file = "zipp-3.19.2.tar.gz", hash = "sha256:bf1dcf6450f873a13e952a29504887c89e6de7506209e5b1bcc3460135d4de19"},
 ]
 
 [package.extras]
-docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
-testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more-itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)"]
+doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
+test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-itertools", "pytest (>=6,!=8.1.*)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)", "pytest-ignore-flaky", "pytest-mypy", "pytest-ruff (>=0.2.1)"]
 
 [metadata]
 lock-version = "2.0"
diff --git a/tests/BUILD.bazel b/tests/BUILD.bazel
index 2a54a9c5..c2b68f0d 100644
--- a/tests/BUILD.bazel
+++ b/tests/BUILD.bazel
@@ -8,7 +8,7 @@ sh_test(
         "//nixpkgs:srcs",
         "//tests/invalid_nixpkgs_package:srcs",
         "@coreutils_static//:bin",
-        "@nix_2_10//:bin",
+        "@nix_2_18//:bin",
         "@rules_nixpkgs_cc//:srcs",
         "@rules_nixpkgs_core//:srcs",
         "@rules_nixpkgs_java//:srcs",
diff --git a/tests/test_invalid_nixpkgs_package.sh b/tests/test_invalid_nixpkgs_package.sh
index 1277be90..99ceb2bf 100755
--- a/tests/test_invalid_nixpkgs_package.sh
+++ b/tests/test_invalid_nixpkgs_package.sh
@@ -22,7 +22,7 @@ sed -i.bak "s;COREUTILS-ABS-PATH;${PWD}/external/coreutils_static/bin/;g" defaul
 
 # Bring a specific version of Nix which can be executed in the Bazel
 # linux sandbox.
-export PATH=$PWD/external/nix_2_10/bin:$PATH
+export PATH=$PWD/external/nix_2_18/bin:$PATH
 
 # This is a create all directories required to run Nix locally.
 mkdir -p ${TEST_TMPDIR}/nix/{store,var/nix,etc/nix}
diff --git a/toolchains/rust/rust.bzl b/toolchains/rust/rust.bzl
index f5556971..f8716955 100644
--- a/toolchains/rust/rust.bzl
+++ b/toolchains/rust/rust.bzl
@@ -29,7 +29,7 @@ let
           paths = [ pkgs.rustc ];
           nativeBuildInputs = [ pkgs.makeWrapper ];
           postBuild = ''
-            wrapProgram $out/bin/rustc --suffix PATH : ${{pkgs.binutils}}/bin
+            wrapProgram $out/bin/rustc --suffix PATH : ${{pkgs.darwin.cctools}}/bin
           '';
         }}
       else pkgs.rustc;
@@ -39,8 +39,9 @@ let
 in
 pkgs.buildEnv {{
     extraOutputsToInstall = ["out" "bin" "lib"];
+    ignoreCollisions = true;
     name = "bazel-rust-toolchain";
-    paths = [ rustc pkgs.rustfmt pkgs.cargo pkgs.clippy ];
+    paths = [ rustc (pkgs.rustc.unwrapped or null) pkgs.rustfmt pkgs.cargo pkgs.clippy ];
     postBuild = ''
         cat <<EOF > $out/BUILD
         filegroup(