diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2b1aca077..d3e37c0c1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,12 +20,59 @@ env:
 
 jobs:
   test:
-    runs-on: ${{ matrix.os }}
+    name: pytest py${{ matrix.python-version }} on ${{ matrix.os }} (${{ matrix.pytest-split-group-index }}/${{ matrix.pytest-split-group-size }})
+    runs-on: ${{ matrix.os }}-latest
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        os: [ ubuntu, macos, windows ]
         python-version: [ "3.8", "3.12" ]
+
+        # pytest-split handles dividing the tests into n groups indexed 1...n.
+        # The tests are automatically split so that the expected duration of each
+        # group is roughly the same.
+        # See the "exclude" section below for pruning to the group sizes,
+        # and the "include" section for defining the group sizes.
+        pytest-split-group-index: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+
+        exclude:
+          - os: windows
+            python-version: "3.8"
+
+          # Prune the indices so that we only run the splits up to the group size
+          # defined below in "include". (This is ugly but effective.)
+          - os: ubuntu
+            pytest-split-group-index: 5
+          - os: ubuntu
+            pytest-split-group-index: 6
+          - os: ubuntu
+            pytest-split-group-index: 7
+          - os: ubuntu
+            pytest-split-group-index: 8
+          - os: ubuntu
+            pytest-split-group-index: 9
+          - os: ubuntu
+            pytest-split-group-index: 10
+          - os: macos
+            pytest-split-group-index: 5
+          - os: macos
+            pytest-split-group-index: 6
+          - os: macos
+            pytest-split-group-index: 7
+          - os: macos
+            pytest-split-group-index: 8
+          - os: macos
+            pytest-split-group-index: 9
+          - os: macos
+            pytest-split-group-index: 10
+        include:
+          - os: ubuntu
+            pytest-split-group-size: 4
+          - os: macos
+            pytest-split-group-size: 4
+          - os: windows
+            pytest-split-group-size: 10
+
     defaults:
       run:
         shell: bash -eo pipefail -l {0}
@@ -64,7 +111,10 @@ jobs:
           pytest \
             --cov=conda_lock --cov-branch --cov-report=xml --cov-report=term \
             --store-durations \
+            --clean-durations \
             --durations-path "${{ github.workspace }}/tests/durations/${{ matrix.os }}-py${{ matrix.python-version }}.json" \
+            --splits="${{ matrix.pytest-split-group-size }}" \
+            --group="${{ matrix.pytest-split-group-index }}" \
             tests
           cp coverage.xml "${{ github.workspace }}"
 
@@ -78,5 +128,33 @@ jobs:
       - name: Store test durations
         uses: actions/upload-artifact@v4
         with:
-          name: test-durations-${{ matrix.os }}-py${{ matrix.python-version }}
+          name: test-durations-${{ matrix.os }}-py${{ matrix.python-version }}-${{ matrix.pytest-split-group-index }}
           path: tests/durations/${{ matrix.os }}-py${{ matrix.python-version }}.json
+
+  aggregate-durations:
+    name: Aggregate test durations
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - name: Download test durations
+        uses: actions/download-artifact@v4
+      # All the artifacts are downloaded into various subdirectories.
+      # For each filename that occurs, we need to find all the files in the
+      # subdirectories with the same name, group those, and merge them.
+      - name: Construct the list of filenames to aggregate and write them to temp/filenames.txt
+        id: construct-filenames
+        run: |
+          mkdir temp
+          find . -type f -name '*.json' | xargs -n1 basename | sort | uniq > temp/filenames.txt
+          cat temp/filenames.txt
+      - name: Aggregate test durations
+        run: |
+          mkdir aggregated
+          while read -r filename; do
+            jq -s 'add' $(find . -type f -name "$filename") > "aggregated/$filename"
+          done < temp/filenames.txt
+      - name: Upload aggregated test durations
+        uses: actions/upload-artifact@v4
+        with:
+          name: aggregated-test-durations
+          path: aggregated
diff --git a/tests/durations/README.md b/tests/durations/README.md
new file mode 100644
index 000000000..1cd385dc1
--- /dev/null
+++ b/tests/durations/README.md
@@ -0,0 +1,10 @@
+# pytest-split durations
+
+This directory contains test durations as they were computed by pytest-split
+running from GitHub Actions.
+
+They should occasionally be replaced so that the split remains optimal.
+(Tests that are missing from this list will be assigned the average duration.)
+
+For more details, see the
+[pytest-split documentation](https://jerry-git.github.io/pytest-split/).
diff --git a/tests/durations/macos-py3.12.json b/tests/durations/macos-py3.12.json
new file mode 100644
index 000000000..e06f016ba
--- /dev/null
+++ b/tests/durations/macos-py3.12.json
@@ -0,0 +1,210 @@
+{
+  "test_conda_lock.py::test_fake_conda_env[conda]": 3.4352410830001645,
+  "test_conda_lock.py::test_git_gh_408[conda]": 19.800865790999865,
+  "test_conda_lock.py::test_git_gh_408[mamba]": 2.7649317089999386,
+  "test_conda_lock.py::test_install[conda-env]": 5.222746831999984,
+  "test_conda_lock.py::test_install[conda-explicit]": 4.763393915999927,
+  "test_conda_lock.py::test_install[conda-lock]": 3.8664103339999656,
+  "test_conda_lock.py::test_install[mamba-env]": 1.3041778340000292,
+  "test_conda_lock.py::test_install[mamba-explicit]": 3.103861917000131,
+  "test_conda_lock.py::test_install[mamba-lock]": 3.316605040999775,
+  "test_conda_lock.py::test_install_with_pip_deps[conda]": 0.31601420799984226,
+  "test_conda_lock.py::test_install_with_pip_deps[mamba]": 6.1428457909999,
+  "test_conda_lock.py::test_move_dependency_from_pip_section[mamba]": 6.913576459000069,
+  "test_conda_lock.py::test_msys2_channel_included_in_defaults_on_windows[mamba]": 1.592949666999857,
+  "test_conda_lock.py::test_os_name_marker[conda]": 42.90041187499992,
+  "test_conda_lock.py::test_os_name_marker[mamba]": 6.772557541999959,
+  "test_conda_lock.py::test_pip_finds_recent_manylinux_wheels[conda]": 6.711605333999955,
+  "test_conda_lock.py::test_pip_full_whl_url[conda]": 6.049372666999943,
+  "test_conda_lock.py::test_pip_respects_glibc_version[conda]": 5.348616458000038,
+  "test_conda_lock.py::test_private_lock[conda-$QUETZ_API_KEY]": 0.0013507490000392863,
+  "test_conda_lock.py::test_private_lock[conda-${QUETZ_API_KEY}]": 0.0002868749999151987,
+  "test_conda_lock.py::test_remove_dependency[mamba]": 5.660670958999958,
+  "test_conda_lock.py::test_run_lock[mamba]": 67.28128712499995,
+  "test_conda_lock.py::test_run_lock_blas_mkl[mamba]": 9.724018624999871,
+  "test_conda_lock.py::test_run_lock_channel_toml[mamba]": 4.614057875999947,
+  "test_conda_lock.py::test_run_lock_relative_source_path[conda]": 3.5927970009998944,
+  "test_conda_lock.py::test_run_lock_relative_source_path[mamba]": 3.591398874999868,
+  "test_conda_lock.py::test_run_lock_uppercase_pip[conda]": 15.447647332999964,
+  "test_conda_lock.py::test_run_lock_uppercase_pip[mamba]": 11.39968016599994,
+  "test_conda_lock.py::test_run_lock_with_custom_metadata[mamba]": 11.16702608300011,
+  "test_conda_lock.py::test_run_lock_with_git_metadata[mamba]": 67.99408600099991,
+  "test_conda_lock.py::test_run_lock_with_input_hash_check[conda]": 31.66535554099994,
+  "test_conda_lock.py::test_run_lock_with_input_hash_check[mamba]": 3.3657633750000286,
+  "test_conda_lock.py::test_run_lock_with_input_metadata[mamba]": 67.75351720799995,
+  "test_conda_lock.py::test_run_lock_with_local_package[conda]": 11.100171874999774,
+  "test_conda_lock.py::test_run_lock_with_local_package[mamba]": 0.00880187599977944,
+  "test_conda_lock.py::test_run_lock_with_locked_environment_files[conda]": 28.54404975,
+  "test_conda_lock.py::test_run_lock_with_locked_environment_files[mamba]": 3.7943652499999416,
+  "test_conda_lock.py::test_run_lock_with_pip[conda]": 54.80337891599993,
+  "test_conda_lock.py::test_run_lock_with_pip[mamba]": 12.02847245800001,
+  "test_conda_lock.py::test_run_lock_with_pip_environment_different_names_same_deps[conda]": 44.24718479100011,
+  "test_conda_lock.py::test_run_lock_with_pip_environment_different_names_same_deps[mamba]": 16.872326416000078,
+  "test_conda_lock.py::test_run_lock_with_pip_hash_checking[conda]": 17.259231666999995,
+  "test_conda_lock.py::test_run_lock_with_pip_hash_checking[mamba]": 12.620715292000114,
+  "test_conda_lock.py::test_run_lock_with_time_metadata[mamba]": 11.791351123999902,
+  "test_conda_lock.py::test_run_lock_with_update[mamba]": 14.417218750000075,
+  "test_conda_lock.py::test_run_lock_with_update_filter_platform[mamba]": 4.74031162499989,
+  "test_conda_lock.py::test_virtual_packages[conda-env]": 11.15955033299997,
+  "test_conda_lock.py::test_virtual_packages[conda-explicit]": 9.510486667000123,
+  "test_conda_lock.py::test_when_merging_lockfiles_content_hashes_are_updated[conda]": 10.988853459000097,
+  "test_pip_repositories.py::test_it_uses_pip_repositories_with_env_var_substitution[conda-response_url_with_credentials]": 7.903888291000044,
+  "test_pip_repositories.py::test_it_uses_pip_repositories_with_env_var_substitution[conda-response_url_without_credentials]": 8.73931816600009,
+  "test_regression.py::test_run_lock_regression_gh155[conda]": 15.184389625999984,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-auth4-# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple]": 0.0006907490001140104,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.otherchannel.cloud/simple-auth5-# pip mypackage @ https://pypi.otherchannel.cloud/simple]": 0.0006137930001841596,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth2-https://username:password@conda.mychannel.cloud/channel1/mypackage]": 0.0007089590000077806,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth3-https://username1:password1@conda.mychannel.cloud/channel1/mypackage]": 0.000592083000015009,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth0-https://username:password@conda.mychannel.cloud/mypackage]": 0.0008106239999960962,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth1-https://conda.mychannel.cloud/mypackage]": 0.0007122489998891979,
+  "test_conda_lock.py::test__add_auth_to_lockfile[# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://username_a:password_a@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://username_c:password_c@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://username_d:password_d@d.mychannel.cloud/mypackage\\n]": 0.0006449179999208354,
+  "test_conda_lock.py::test__extract_domain[# pip mypackage @ https://pypi.mychannel.cloud/simple-pypi.mychannel.cloud]": 0.000516667000056259,
+  "test_conda_lock.py::test__extract_domain[http://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.0008472929998788459,
+  "test_conda_lock.py::test__extract_domain[https://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.0005503329999783091,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.0006489169999213118,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.0007392509999135655,
+  "test_conda_lock.py::test__strip_auth_from_line[http://conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0006862909999654221,
+  "test_conda_lock.py::test__strip_auth_from_line[http://user:password@conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0007435830000304122,
+  "test_conda_lock.py::test__strip_auth_from_line[https://conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.001687082999865197,
+  "test_conda_lock.py::test__strip_auth_from_line[https://user:password@conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.000983209000082752,
+  "test_conda_lock.py::test__strip_auth_from_lockfile[http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0005759179999813568,
+  "test_conda_lock.py::test__strip_auth_from_lockfile[http://user:password@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://user:password@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://user:password@d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0006630829999494381,
+  "test_conda_lock.py::test_aggregate_lock_specs": 0.0018399149998913344,
+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_channels": 0.004475750000096923,
+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_pip_repos": 0.0009438749999617357,
+  "test_conda_lock.py::test_aggregate_lock_specs_override_version": 0.0009304569999812884,
+  "test_conda_lock.py::test_cli_version": 0.0039769579999529014,
+  "test_conda_lock.py::test_default_virtual_package_input_hash_stability": 0.0029654579999487396,
+  "test_conda_lock.py::test_extract_json_object": 0.0009636670000645609,
+  "test_conda_lock.py::test_lookup[emoji-to-python-dateutil-lookup.yml]": 20.465328709000005,
+  "test_conda_lock.py::test_lookup[empty-lookup.yml]": 22.12175266700001,
+  "test_conda_lock.py::test_lookup_sources": 9.126448166999921,
+  "test_conda_lock.py::test_manylinux_tags": 0.025123500999939097,
+  "test_conda_lock.py::test_parse_environment_file_with_pip_and_platform_selector": 0.0056761670001606035,
+  "test_conda_lock.py::test_platformenv_linux_platforms": 0.008558624999977837,
+  "test_conda_lock.py::test_poetry_version_parsing_constraints[python-^2.7-/python-2.7]": 22.20062483400011,
+  "test_conda_lock.py::test_run_with_channel_inversion": 19.748031542000035,
+  "test_conda_lock.py::test_strip_auth_from_url[https://:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0018034170000191807,
+  "test_conda_lock.py::test_strip_auth_from_url[https://example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0007551249999551146,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0007732910000868287,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0007360820001167667,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:password@symbol@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0005682490001390761,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username@userdomain.com:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0005577090000770113,
+  "test_conda_lock.py::test_virtual_package_input_hash_stability": 0.009430916999917827,
+  "test_conda_lock.py::test_warn_on_explicit_lock_with_pip_deps[env]": 0.10758912500000406,
+  "test_conda_lock.py::test_warn_on_explicit_lock_with_pip_deps[explicit]": 0.0922264160000168,
+  "test_markers.py::test_sys_platform_marker[environment.yml]": 0.012479915999961122,
+  "test_markers.py::test_sys_platform_marker[hatch]": 0.0056986250000363725,
+  "test_markers.py::test_sys_platform_marker[poetry]": 0.0052969590000202516,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir0-pyproject.toml]": 1.461703249999914,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir1-environment.yaml]": 20.209179665999955,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir2-environment.yaml]": 29.43825087400012,
+  "test_regression.py::test_pip_environment_regression_gh449": 0.006683623999947486,
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+  "test_regression.py::test_pr_436[osx-64]": 10.918281624999963,
+  "test_regression.py::test_pr_436[osx-arm64]": 4.630815416999894,
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+  "test_channel.py::test_unify_package_sources[collections0-expected0]": 0.0005009999999856518,
+  "test_channel.py::test_unify_package_sources[collections1-expected1]": 0.00041041700001187564,
+  "test_channel.py::test_unify_package_sources[collections2-ValueError]": 0.003399374000082389,
+  "test_channel.py::test_url_auth_info": 0.0030032089998712763,
+  "test_conda_lock.py::test_choose_wheel": 7.864817916999982,
+  "test_conda_lock.py::test_explicit_toposorted": 0.2744514989999516,
+  "test_conda_lock.py::test_lock_poetry_ibis": 42.37437179199992,
+  "test_conda_lock.py::test_move_dependency_from_pip_section[conda]": 6.3153197079998336,
+  "test_conda_lock.py::test_msys2_channel_included_in_defaults_on_windows[conda]": 1.302672166999855,
+  "test_conda_lock.py::test_parse_env_file_with_filters_defaults": 0.015330708999954368,
+  "test_conda_lock.py::test_parse_env_file_with_filters_no_args": 0.009597375000339525,
+  "test_conda_lock.py::test_parse_env_file_with_no_defaults": 0.00608999899986884,
+  "test_conda_lock.py::test_parse_environment_file": 0.02111737399991398,
+  "test_conda_lock.py::test_parse_environment_file_with_git": 6.82885566799996,
+  "test_conda_lock.py::test_parse_environment_file_with_git_tag": 0.006469833999972252,
+  "test_conda_lock.py::test_parse_environment_file_with_pip": 0.00827429200012375,
+  "test_conda_lock.py::test_parse_flit": 0.002789124000173615,
+  "test_conda_lock.py::test_parse_flit_default_pip": 0.002436749000025884,
+  "test_conda_lock.py::test_parse_flit_skip_non_conda_lock": 0.002040083000110826,
+  "test_conda_lock.py::test_parse_meta_yaml_file": 0.02544891699994878,
+  "test_conda_lock.py::test_parse_pdm": 0.002319292000038331,
+  "test_conda_lock.py::test_parse_pdm_default_pip": 0.0022133339998617885,
+  "test_conda_lock.py::test_parse_pdm_skip_non_conda_lock": 0.0018826250000074651,
+  "test_conda_lock.py::test_parse_pip_requirement[package-thingie1[foo]-parsed0]": 0.0006098329999986163,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] = 2.1-parsed2]": 0.0006587090001630713,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] == 2.1-parsed3]": 0.0005163749999610445,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] >=0.8.0-alpha.2,<1.0.0.0-parsed6]": 0.0011626670000168815,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] >=2.1.*, <4.0-parsed5]": 0.0008044579999477719,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] @ https://foo.bar/package.whl#sha1=blerp-parsed1]": 0.0006039999998392886,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra]===2.1-parsed4]": 0.0006585419998828002,
+  "test_conda_lock.py::test_parse_platforms_from_multi_sources": 0.0036431670000638405,
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diff --git a/tests/durations/macos-py3.8.json b/tests/durations/macos-py3.8.json
new file mode 100644
index 000000000..346998a73
--- /dev/null
+++ b/tests/durations/macos-py3.8.json
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+  "test_conda_lock.py::test_parse_pip_requirement[package[extra] @ https://foo.bar/package.whl#sha1=blerp-parsed1]": 0.0011875840001493998,
+  "test_conda_lock.py::test_parse_pip_requirement[package[extra]===2.1-parsed4]": 0.006288707999942744,
+  "test_conda_lock.py::test_parse_platforms_from_multi_sources": 0.0032224590000851094,
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+  "test_conda_lock.py::test_parse_poetry_default_pip": 0.0018591250000099535,
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+  "test_conda_lock.py::test_parse_poetry_no_pypi": 0.003356626000027063,
+  "test_conda_lock.py::test_parse_poetry_skip_non_conda_lock": 0.0018021250001538647,
+  "test_conda_lock.py::test_parse_pyproject_channel_toml": 0.016934290999870427,
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+  "test_conda_lock.py::test_remove_dependency[conda]": 5.192970791999983,
+  "test_conda_lock.py::test_run_lock[conda]": 59.387699541000075,
+  "test_conda_lock.py::test_run_lock_blas_mkl[conda]": 10.068303917000094,
+  "test_conda_lock.py::test_run_lock_channel_toml[conda]": 5.02367808200006,
+  "test_conda_lock.py::test_run_lock_with_custom_metadata[conda]": 13.140715081999929,
+  "test_conda_lock.py::test_run_lock_with_git_metadata[conda]": 11.113371166999968,
+  "test_conda_lock.py::test_run_lock_with_input_metadata[conda]": 58.76548437600002,
+  "test_conda_lock.py::test_run_lock_with_time_metadata[conda]": 55.44931308299999,
+  "test_conda_lock.py::test_run_lock_with_update[conda]": 40.656873500000074,
+  "test_conda_lock.py::test_run_lock_with_update_filter_platform[conda]": 5.167422457000043,
+  "test_conda_lock.py::test_spec_poetry": 0.0059702500000184955,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-auth4-# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple]": 0.002393792000020767,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.otherchannel.cloud/simple-auth5-# pip mypackage @ https://pypi.otherchannel.cloud/simple]": 0.001766707999877326,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth2-https://username:password@conda.mychannel.cloud/channel1/mypackage]": 0.0014691229999925781,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth3-https://username1:password1@conda.mychannel.cloud/channel1/mypackage]": 0.0011622090000855678,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth0-https://username:password@conda.mychannel.cloud/mypackage]": 0.004766833000076076,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth1-https://conda.mychannel.cloud/mypackage]": 0.0018560830000069473,
+  "test_conda_lock.py::test__add_auth_to_lockfile[# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://username_a:password_a@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://username_c:password_c@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://username_d:password_d@d.mychannel.cloud/mypackage\\n]": 0.005314874999953645,
+  "test_conda_lock.py::test__extract_domain[# pip mypackage @ https://pypi.mychannel.cloud/simple-pypi.mychannel.cloud]": 0.001887166999836154,
+  "test_conda_lock.py::test__extract_domain[http://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.0013307090000580502,
+  "test_conda_lock.py::test__extract_domain[https://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.0009153739999874233,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.0007582499999898573,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.0005855419998397338,
+  "test_conda_lock.py::test__strip_auth_from_line[http://conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0005788749998600906,
+  "test_conda_lock.py::test__strip_auth_from_line[http://user:password@conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0006829579999703128,
+  "test_conda_lock.py::test__strip_auth_from_line[https://conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.0031231250000018917,
+  "test_conda_lock.py::test__strip_auth_from_line[https://user:password@conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.0011339579998548288,
+  "test_conda_lock.py::test__strip_auth_from_lockfile[http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.001448250999942502,
+  "test_conda_lock.py::test__strip_auth_from_lockfile[http://user:password@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://user:password@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://user:password@d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0021370830000932983,
+  "test_conda_lock.py::test_aggregate_lock_specs": 0.0031302499999128486,
+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_channels": 0.006310333999977047,
+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_pip_repos": 0.001039999000113312,
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+  "test_conda_lock.py::test_extract_json_object": 0.0006351670000412923,
+  "test_conda_lock.py::test_lookup[emoji-to-python-dateutil-lookup.yml]": 25.237502833999997,
+  "test_conda_lock.py::test_lookup[empty-lookup.yml]": 27.12822220800001,
+  "test_conda_lock.py::test_lookup_sources": 12.14870800100016,
+  "test_conda_lock.py::test_manylinux_tags": 0.005104708000089886,
+  "test_conda_lock.py::test_parse_environment_file_with_pip_and_platform_selector": 0.0060832909999817275,
+  "test_conda_lock.py::test_platformenv_linux_platforms": 0.013485166000009485,
+  "test_conda_lock.py::test_poetry_version_parsing_constraints[python-^2.7-/python-2.7]": 26.559464624000043,
+  "test_conda_lock.py::test_run_with_channel_inversion": 26.399040042000024,
+  "test_conda_lock.py::test_strip_auth_from_url[https://:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.00084500000002663,
+  "test_conda_lock.py::test_strip_auth_from_url[https://example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.001497250000056738,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0007220010000992261,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.001528248999875359,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username:password@symbol@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0006787089999988893,
+  "test_conda_lock.py::test_strip_auth_from_url[https://username@userdomain.com:password@example.com/path?query=string#fragment-https://example.com/path?query=string#fragment]": 0.0007759999999734646,
+  "test_conda_lock.py::test_virtual_package_input_hash_stability": 0.011420708000059676,
+  "test_conda_lock.py::test_warn_on_explicit_lock_with_pip_deps[env]": 0.1323810000001231,
+  "test_conda_lock.py::test_warn_on_explicit_lock_with_pip_deps[explicit]": 0.16235658299990519,
+  "test_markers.py::test_sys_platform_marker[environment.yml]": 0.012284042000032969,
+  "test_markers.py::test_sys_platform_marker[hatch]": 0.004433542000015223,
+  "test_markers.py::test_sys_platform_marker[poetry]": 0.005311875000074906,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir0-pyproject.toml]": 2.073420916000032,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir1-environment.yaml]": 24.71806170800005,
+  "test_regression.py::test_conda_pip_regressions_gh290[test_dir2-environment.yaml]": 18.075433249999946,
+  "test_regression.py::test_pip_environment_regression_gh449": 0.011089582000067821,
+  "test_regression.py::test_pr_436[linux-64]": 4.424864081999999,
+  "test_regression.py::test_pr_436[osx-64]": 14.60120158299992,
+  "test_regression.py::test_pr_436[osx-arm64]": 6.450139707999938
+}
diff --git a/tests/durations/ubuntu-py3.12.json b/tests/durations/ubuntu-py3.12.json
new file mode 100644
index 000000000..9dbad9766
--- /dev/null
+++ b/tests/durations/ubuntu-py3.12.json
@@ -0,0 +1,210 @@
+{
+  "test_conda_lock.py::test_fake_conda_env[conda]": 2.570377556000011,
+  "test_conda_lock.py::test_git_gh_408[conda]": 8.884457287999979,
+  "test_conda_lock.py::test_git_gh_408[mamba]": 2.0656598869999243,
+  "test_conda_lock.py::test_install[conda-env]": 14.554729699999967,
+  "test_conda_lock.py::test_install[conda-explicit]": 4.706268028000011,
+  "test_conda_lock.py::test_install[conda-lock]": 4.2989933629999655,
+  "test_conda_lock.py::test_install[mamba-env]": 0.7418723179999915,
+  "test_conda_lock.py::test_install[mamba-explicit]": 8.05355415400004,
+  "test_conda_lock.py::test_install[mamba-lock]": 4.842947292999952,
+  "test_conda_lock.py::test_install_with_pip_deps[conda]": 14.646866973000016,
+  "test_conda_lock.py::test_install_with_pip_deps[mamba]": 9.47996480800009,
+  "test_conda_lock.py::test_move_dependency_from_pip_section[mamba]": 4.804010945000016,
+  "test_conda_lock.py::test_msys2_channel_included_in_defaults_on_windows[mamba]": 0.8983734490000757,
+  "test_conda_lock.py::test_os_name_marker[conda]": 5.639494666000019,
+  "test_conda_lock.py::test_os_name_marker[mamba]": 4.888258218999965,
+  "test_conda_lock.py::test_pip_finds_recent_manylinux_wheels[conda]": 3.3759785240000326,
+  "test_conda_lock.py::test_pip_full_whl_url[conda]": 3.717624901999983,
+  "test_conda_lock.py::test_pip_respects_glibc_version[conda]": 4.451835897999985,
+  "test_conda_lock.py::test_private_lock[conda-$QUETZ_API_KEY]": 36.64879074299998,
+  "test_conda_lock.py::test_private_lock[conda-${QUETZ_API_KEY}]": 4.320612843999982,
+  "test_conda_lock.py::test_remove_dependency[mamba]": 4.358994901000017,
+  "test_conda_lock.py::test_run_lock[mamba]": 34.90639717299999,
+  "test_conda_lock.py::test_run_lock_blas_mkl[mamba]": 6.929525904000002,
+  "test_conda_lock.py::test_run_lock_channel_toml[mamba]": 3.2227534380000975,
+  "test_conda_lock.py::test_run_lock_relative_source_path[conda]": 2.5424700949999846,
+  "test_conda_lock.py::test_run_lock_relative_source_path[mamba]": 2.543981930999962,
+  "test_conda_lock.py::test_run_lock_uppercase_pip[conda]": 9.45588512400002,
+  "test_conda_lock.py::test_run_lock_uppercase_pip[mamba]": 8.098103971000057,
+  "test_conda_lock.py::test_run_lock_with_custom_metadata[mamba]": 7.860524775000044,
+  "test_conda_lock.py::test_run_lock_with_git_metadata[mamba]": 28.900502710000012,
+  "test_conda_lock.py::test_run_lock_with_input_hash_check[conda]": 4.453644931000014,
+  "test_conda_lock.py::test_run_lock_with_input_hash_check[mamba]": 2.345844450999948,
+  "test_conda_lock.py::test_run_lock_with_input_metadata[mamba]": 8.05543287200004,
+  "test_conda_lock.py::test_run_lock_with_local_package[conda]": 0.006958548000000064,
+  "test_conda_lock.py::test_run_lock_with_local_package[mamba]": 0.006693740999992315,
+  "test_conda_lock.py::test_run_lock_with_locked_environment_files[conda]": 9.255535576000014,
+  "test_conda_lock.py::test_run_lock_with_locked_environment_files[mamba]": 2.5226778269999954,
+  "test_conda_lock.py::test_run_lock_with_pip[conda]": 30.551446561000006,
+  "test_conda_lock.py::test_run_lock_with_pip[mamba]": 8.555845212999941,
+  "test_conda_lock.py::test_run_lock_with_pip_environment_different_names_same_deps[conda]": 14.221460080000014,
+  "test_conda_lock.py::test_run_lock_with_pip_environment_different_names_same_deps[mamba]": 12.986137106000058,
+  "test_conda_lock.py::test_run_lock_with_pip_hash_checking[conda]": 37.20450338499998,
+  "test_conda_lock.py::test_run_lock_with_pip_hash_checking[mamba]": 8.282877866000035,
+  "test_conda_lock.py::test_run_lock_with_time_metadata[mamba]": 7.964372344000083,
+  "test_conda_lock.py::test_run_lock_with_update[mamba]": 10.689810039999998,
+  "test_conda_lock.py::test_run_lock_with_update_filter_platform[mamba]": 3.0396883770000613,
+  "test_conda_lock.py::test_virtual_packages[conda-env]": 7.6115081130000135,
+  "test_conda_lock.py::test_virtual_packages[conda-explicit]": 7.149842745000001,
+  "test_conda_lock.py::test_when_merging_lockfiles_content_hashes_are_updated[conda]": 6.464512234000011,
+  "test_pip_repositories.py::test_it_uses_pip_repositories_with_env_var_substitution[conda-response_url_with_credentials]": 4.038205430000005,
+  "test_pip_repositories.py::test_it_uses_pip_repositories_with_env_var_substitution[conda-response_url_without_credentials]": 4.609744563000021,
+  "test_regression.py::test_run_lock_regression_gh155[conda]": 11.233608808999975,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-auth4-# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple]": 0.0013700310000217542,
+  "test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.otherchannel.cloud/simple-auth5-# pip mypackage @ https://pypi.otherchannel.cloud/simple]": 0.0009622069999863925,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth2-https://username:password@conda.mychannel.cloud/channel1/mypackage]": 0.001252559000022302,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth3-https://username1:password1@conda.mychannel.cloud/channel1/mypackage]": 0.0012067659999672742,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth0-https://username:password@conda.mychannel.cloud/mypackage]": 0.001362987999982579,
+  "test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth1-https://conda.mychannel.cloud/mypackage]": 0.0012799419999964812,
+  "test_conda_lock.py::test__add_auth_to_lockfile[# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://username_a:password_a@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://username_c:password_c@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://username_d:password_d@d.mychannel.cloud/mypackage\\n]": 0.0013287639999930434,
+  "test_conda_lock.py::test__extract_domain[# pip mypackage @ https://pypi.mychannel.cloud/simple-pypi.mychannel.cloud]": 0.0012738609999871642,
+  "test_conda_lock.py::test__extract_domain[http://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.0010764630000039688,
+  "test_conda_lock.py::test__extract_domain[https://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.001131073000010474,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.0011223570000424843,
+  "test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.001095478000024741,
+  "test_conda_lock.py::test__strip_auth_from_line[http://conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0010494519999895147,
+  "test_conda_lock.py::test__strip_auth_from_line[http://user:password@conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0011029430000064622,
+  "test_conda_lock.py::test__strip_auth_from_line[https://conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.0010954869999864059,
+  "test_conda_lock.py::test__strip_auth_from_line[https://user:password@conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.0011890520000292781,
+  "test_conda_lock.py::test__strip_auth_from_lockfile[http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0013696980000190706,
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+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_channels": 0.0022928059999571815,
+  "test_conda_lock.py::test_aggregate_lock_specs_invalid_pip_repos": 0.001563312000030237,
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+  "test_conda_lock.py::test_extract_json_object": 0.0010673740000015641,
+  "test_conda_lock.py::test_lookup[emoji-to-python-dateutil-lookup.yml]": 10.709199788999967,
+  "test_conda_lock.py::test_lookup[empty-lookup.yml]": 2.4025934839999934,
+  "test_conda_lock.py::test_lookup_sources": 10.065238624999978,
+  "test_conda_lock.py::test_manylinux_tags": 0.003433580000034908,
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diff --git a/tests/durations/ubuntu-py3.8.json b/tests/durations/ubuntu-py3.8.json
new file mode 100644
index 000000000..67826a4d8
--- /dev/null
+++ b/tests/durations/ubuntu-py3.8.json
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+}
diff --git a/tests/durations/windows-py3.12.json b/tests/durations/windows-py3.12.json
new file mode 100644
index 000000000..fca18089e
--- /dev/null
+++ b/tests/durations/windows-py3.12.json
@@ -0,0 +1,210 @@
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