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conda-build Github workflow failing #260

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conda-build Github workflow failing#260

Description

@roryyorke
roryyorke
opened on Oct 24, 2026

See CI of gh-259.

Conda setup stage passes if the miniforge-version key is changed to miniconda-version (see diff below), but the build now fails with a LoadLibrary failure; some Internet searching suggests the PATH variable is wrong.

the diff:

modified   .github/workflows/conda-build.yml
@@ -30,8 +28,8 @@ jobs:
         with:
           auto-update-conda: true
           activate-environment: build-env
-          miniforge-version: latest
-          conda-build-version: 26.3.0
+          miniconda-version: "latest"
+          conda-build-version: 26.9.1
           channel-priority: strict
       - name: Conda build
         shell: bash -el {0}

failure:


    Traceback (most recent call last):
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda\exception_handler.py", line 30, in __call__
        return func(*args, **kwargs)
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda\cli\main.py", line 55, in main_subshell
        exit_code = do_call(args, parser)
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda\cli\conda_argparse.py", line 347, in do_call
        result = plugin_subcommand.action(getattr(args, "_args", args))
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda_build\plugin.py", line 16, in build
        from .cli.main_build import execute
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda_build\cli\main_build.py", line 19, in <module>
        from .. import api, build, source, utils
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda_build\api.py", line 24, in <module>
        from .config import DEFAULT_PREFIX_LENGTH as _prefix_length
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda_build\config.py", line 28, in <module>
        from .utils import (
        ...<5 lines>...
        )
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\conda_build\utils.py", line 51, in <module>
        import libarchive
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\libarchive\__init__.py", line 1, in <module>
        from .entry import ArchiveEntry
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\libarchive\entry.py", line 6, in <module>
        from . import ffi
      File "C:\Users\runneradmin\miniconda3\Lib\site-packages\libarchive\ffi.py", line 26, in <module>
        libarchive = ctypes.cdll.LoadLibrary(libarchive_path)
      File "C:\Users\runneradmin\miniconda3\Lib\ctypes\__init__.py", line 554, in LoadLibrary
        return self._dlltype(name)
               ~~~~~~~~~~~~~^^^^^^
      File "C:\Users\runneradmin\miniconda3\Lib\ctypes\__init__.py", line 433, in __init__
        self._handle = self._load_library(name, mode, handle, winmode)
                       ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "C:\Users\runneradmin\miniconda3\Lib\ctypes\__init__.py", line 451, in _load_library
        return _LoadLibrary(self._name, winmode)
    TypeError: LoadLibrary() argument 1 must be str, not None

$ C:\Users\runneradmin\miniconda3\Scripts\conda-script.py build conda-recipe --python 3.13`

  environment variables:
             ACLOCAL_PATH=C:\Program Files\Git\ucrt64\share\aclocal;C:\Program
                          Files\Git\usr\share\aclocal
                 CIO_TEST=<not set>
                    CONDA=C:\Users\runneradmin\miniconda3
    CONDA_ALLOW_SOFTLINKS=false
        CONDA_DEFAULT_ENV=build-env
                CONDA_EXE=C:/Users/runneradmin/miniconda3/Scripts/conda.exe
             CONDA_PREFIX=C:\Users\runneradmin\miniconda3\envs\build-env
           CONDA_PREFIX_1=C:\Users\runneradmin\miniconda3
    CONDA_PROMPT_MODIFIER=
         CONDA_PYTHON_EXE=C:/Users/runneradmin/miniconda3/python.exe
               CONDA_ROOT=C:\Users\runneradmin\miniconda3
              CONDA_SHLVL=2
           CURL_CA_BUNDLE=<not set>
                  EXEPATH=C:\Program Files\Git\bin
        GITHUB_EVENT_PATH=D:\a\_temp\_github_workflow\event.json
              GITHUB_PATH=D:\a\_temp\_runner_file_commands\add_path_a92b7ab2-3b5a-4663-929a-
                          09efc4651fb1
                 HOMEPATH=\Users\runneradmin
                 INFOPATH=C:\Program Files\Git\ucrt64\local\info;C:\Program
                          Files\Git\ucrt64\share\info;C:\Program
                          Files\Git\usr\local\info;C:\Program
                          Files\Git\usr\share\info;C:\Program Files\Git\usr\info;C:\Program
                          Files\Git\share\info
               LD_PRELOAD=<not set>
                  MANPATH=C:\Program Files\Git\ucrt64\local\man;C:\Program
                          Files\Git\ucrt64\share\man;C:\Program
                          Files\Git\usr\local\man;C:\Program Files\Git\usr\share\man;C:\Program
                          Files\Git\usr\man;C:\Program Files\Git\share\man
            ORIGINAL_PATH=C:\Program Files\Git\ucrt64\bin;C:\Program Files\Git\usr\bin;C:\Users\
                          runneradmin\bin;C:\Users\runneradmin\miniconda3\condabin;C:\Program Fi
                          les\MongoDB\Server\7.0\bin;C:\vcpkg;C:\tools\zstd;C:\hostedtoolcache\w
                          indows\stack\3.11.1\x64;C:\cabal\bin;C:\ghcup\bin;C:\mingw64\bin;C:\Pr
                          ogram Files\dotnet;C:\Program Files\MySQL\MySQL Server
                          8.0\bin;C:\Program Files\R\R-
                          4.6.1\bin\x64;C:\SeleniumWebDrivers\GeckoDriver;C:\SeleniumWebDrivers\
                          EdgeDriver;C:\SeleniumWebDrivers\ChromeDriver;C:\Program Files
                          (x86)\sbt\bin;C:\Program Files (x86)\GitHub CLI;C:\Program
                          Files\Git\usr\bin;C:\Program Files (x86)\pipx_bin;C:\npm\prefix;C:\hos
                          tedtoolcache\windows\go\1.24.13\x64\bin;C:\hostedtoolcache\windows\Pyt
                          hon\3.12.10\x64\Scripts;C:\hostedtoolcache\windows\Python\3.12.10\x64;
                          C:\hostedtoolcache\windows\Ruby\3.3.12\x64\bin;C:\Program Files\OpenSS
                          L\bin;C:\tools\kotlinc\bin;C:\hostedtoolcache\windows\Java_Temurin-
                          Hotspot_jdk\17.0.20-101\x64\bin;C:\Program
                          Files\ImageMagick-7.1.2-Q16-HDRI;C:\Program Files\Microsoft SDKs\Azure
                          \CLI2\wbin;C:\ProgramData\kind;C:\ProgramData\Chocolatey\bin;C:\Window
                          s\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\Win
                          dowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program
                          Files\WSL;C:\Program Files\PowerShell\7;C:\Program Files\Microsoft\Web
                          Platform Installer;C:\Program Files\Microsoft SQL
                          Server\170\Tools\Binn;C:\Program Files\Microsoft SQL Server\Client
                          SDK\ODBC\170\Tools\Binn;C:\Program Files\dotnet;C:\Program Files
                          (x86)\Windows Kits\10\Windows Performance Toolkit;C:\Program Files
                          (x86)\WiX Toolset v3.14\bin;C:\Program Files\Microsoft SQL
                          Server\130\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\140\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\150\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\160\DTS\Binn;C:\Program Files\Microsoft SQL Server\170\DTS\Binn
                          ;C:\ProgramData\chocolatey\lib\pulumi\tools\Pulumi\bin;C:\Program File
                          s\CMake\bin;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawbe
                          rry\perl\bin;C:\ProgramData\chocolatey\lib\maven\apache-
                          maven-3.9.16\bin;C:\Program Files\Microsoft Service
                          Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service
                          Fabric\Tools\ServiceFabricLocalClusterManager;C:\Program
                          Files\LLVM\bin;C:\Program Files (x86)\LLVM\bin;C:\Program
                          Files\nodejs;C:\Program Files\Git\cmd;C:\Program
                          Files\Git\ucrt64\bin;C:\Program Files\Git\usr\bin;C:\Program
                          Files\GitHub CLI;C:\tools\php;C:\Program Files
                          (x86)\sbt\bin;C:\Program Files\Amazon\AWSCLIV2;C:\Program
                          Files\Amazon\SessionManagerPlugin\bin;C:\Program
                          Files\Amazon\AWSSAMCLI\bin;C:\Program Files\Microsoft SQL
                          Server\130\Tools\Binn;C:\Program Files\mongosh;C:\Users\runneradmin\.d
                          otnet\tools;C:\Users\runneradmin\.cargo\bin;C:\Users\runneradmin\AppDa
                          ta\Local\Microsoft\WindowsApps
                     PATH=C:\Users\runneradmin\miniconda3\envs\build-
                          env;C:\Users\runneradmin\miniconda3\envs\build-
                          env\Library\mingw-w64\bin;C:\Users\runneradmin\miniconda3\envs\build-
                          env\Library\usr\bin;C:\Users\runneradmin\miniconda3\envs\build-
                          env\Library\bin;C:\Users\runneradmin\miniconda3\envs\build-
                          env\Scripts;C:\Users\runneradmin\miniconda3\envs\build-env\bin;C:\User
                          s\runneradmin\miniconda3\condabin;C:\Users\runneradmin\bin;C:\Program
                          Files\Git\ucrt64\bin;C:\Program Files\Git\usr\local\bin;C:\Program
                          Files\Git\usr\bin;C:\Program Files\Git\usr\bin;C:\Program
                          Files\Git\ucrt64\bin;C:\Program Files\Git\usr\bin;C:\Users\runneradmin
                          \bin;C:\Users\runneradmin\miniconda3\condabin;C:\Program Files\MongoDB
                          \Server\7.0\bin;C:\vcpkg;C:\tools\zstd;C:\hostedtoolcache\windows\stac
                          k\3.11.1\x64;C:\cabal\bin;C:\ghcup\bin;C:\mingw64\bin;C:\Program
                          Files\dotnet;C:\Program Files\MySQL\MySQL Server 8.0\bin;C:\Program Fi
                          les\R\R-
                          4.6.1\bin\x64;C:\SeleniumWebDrivers\GeckoDriver;C:\SeleniumWebDrivers\
                          EdgeDriver;C:\SeleniumWebDrivers\ChromeDriver;C:\Program Files
                          (x86)\sbt\bin;C:\Program Files (x86)\GitHub CLI;C:\Program
                          Files\Git\usr\bin;C:\Program Files (x86)\pipx_bin;C:\npm\prefix;C:\hos
                          tedtoolcache\windows\go\1.24.13\x64\bin;C:\hostedtoolcache\windows\Pyt
                          hon\3.12.10\x64\Scripts;C:\hostedtoolcache\windows\Python\3.12.10\x64;
                          C:\hostedtoolcache\windows\Ruby\3.3.12\x64\bin;C:\Program Files\OpenSS
                          L\bin;C:\tools\kotlinc\bin;C:\hostedtoolcache\windows\Java_Temurin-
                          Hotspot_jdk\17.0.20-101\x64\bin;C:\Program
                          Files\ImageMagick-7.1.2-Q16-HDRI;C:\Program Files\Microsoft SDKs\Azure
                          \CLI2\wbin;C:\ProgramData\kind;C:\ProgramData\Chocolatey\bin;C:\Window
                          s\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\Win
                          dowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program
                          Files\WSL;C:\Program Files\PowerShell\7;C:\Program Files\Microsoft\Web
                          Platform Installer;C:\Program Files\Microsoft SQL
                          Server\170\Tools\Binn;C:\Program Files\Microsoft SQL Server\Client
                          SDK\ODBC\170\Tools\Binn;C:\Program Files\dotnet;C:\Program Files
                          (x86)\Windows Kits\10\Windows Performance Toolkit;C:\Program Files
                          (x86)\WiX Toolset v3.14\bin;C:\Program Files\Microsoft SQL
                          Server\130\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\140\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\150\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\160\DTS\Binn;C:\Program Files\Microsoft SQL Server\170\DTS\Binn
                          ;C:\ProgramData\chocolatey\lib\pulumi\tools\Pulumi\bin;C:\Program File
                          s\CMake\bin;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawbe
                          rry\perl\bin;C:\ProgramData\chocolatey\lib\maven\apache-
                          maven-3.9.16\bin;C:\Program Files\Microsoft Service
                          Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service
                          Fabric\Tools\ServiceFabricLocalClusterManager;C:\Program
                          Files\LLVM\bin;C:\Program Files (x86)\LLVM\bin;C:\Program
                          Files\nodejs;C:\Program Files\Git\cmd;C:\Program
                          Files\Git\ucrt64\bin;C:\Program Files\Git\usr\bin;C:\Program
                          Files\GitHub CLI;C:\tools\php;C:\Program Files
                          (x86)\sbt\bin;C:\Program Files\Amazon\AWSCLIV2;C:\Program
                          Files\Amazon\SessionManagerPlugin\bin;C:\Program
                          Files\Amazon\AWSSAMCLI\bin;C:\Program Files\Microsoft SQL
                          Server\130\Tools\Binn;C:\Program Files\mongosh;C:\Users\runneradmin\.d
                          otnet\tools;C:\Users\runneradmin\.cargo\bin;C:\Users\runneradmin\AppDa
                          ta\Local\Microsoft\WindowsApps;C:\Program
                          Files\Git\usr\bin\vendor_perl;C:\Program Files\Git\usr\bin\core_perl
          PKG_CONFIG_PATH=C:\Program Files\Git\ucrt64\lib\pkgconfig;C:\Program
                          Files\Git\ucrt64\share\pkgconfig
PKG_CONFIG_SYSTEM_INCLUDE_PATH=C:/Program Files/Git/ucrt64/include
PKG_CONFIG_SYSTEM_LIBRARY_PATH=C:/Program Files/Git/ucrt64/lib
PSMODULEANALYSISCACHEPATH=C:\PSModuleAnalysisCachePath\ModuleAnalysisCache
             PSMODULEPATH=C:\\Modules\az_15.6.1;C:\Users\packer\Documents\WindowsPowerShell\Modu
                          les;C:\Program Files\WindowsPowerShell\Modules;C:\Windows\system32\Win
                          dowsPowerShell\v1.0\Modules;C:\Program Files\Microsoft SQL
                          Server\130\Tools\PowerShell\Modules\
         PYTHONUNBUFFERED=1
       REQUESTS_CA_BUNDLE=<not set>
        SELENIUM_JAR_PATH=C:\selenium\selenium-server.jar
            SSL_CERT_FILE=<not set>

     active environment : build-env
    active env location : C:\Users\runneradmin\miniconda3\envs\build-env
            shell level : 2
       user config file : C:\Users\runneradmin\.condarc
 populated config files : C:\Users\runneradmin\miniconda3\.condarc
                          C:\Users\runneradmin\miniconda3\condarc.d\anaconda-auth.yml
                          C:\Users\runneradmin\.condarc
          conda version : 26.9.4
    conda-build version : 26.9.1
         python version : 3.14.9.final.0
                 solver : libmamba (default)
       virtual packages : __archspec=1=x86_64_v4
                          __conda=26.9.4=0
                          __win=10.0.26100=0
       base environment : C:\Users\runneradmin\miniconda3  (writable)
           distribution : Miniconda3 py314_26.9.4-0 (exe, win-64)
      conda av data dir : C:\Users\runneradmin\miniconda3\etc\conda
  conda av metadata url : None
           channel URLs : https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
          package cache : C:\Users\runneradmin\conda_pkgs_dir
          notices cache : C:\Users\runneradmin\AppData\Local\conda\conda\Cache\notices
       envs directories : C:\Users\runneradmin\miniconda3\envs
                          C:\Users\runneradmin\.conda\envs
                          C:\Users\runneradmin\AppData\Local\conda\conda\envs
    temporary directory : C:\Users\RUNNER~1\AppData\Local\Temp
               platform : win-64
             user-agent : conda/26.9.4 requests/2.34.2 CPython/3.14.9 Windows/2025Server Windows/10.0.26100 solver/libmamba conda-libmamba-solver/26.10.0 libmambapy/2.3.2 aau/0.8.1 c/. s/. e/.
          administrator : True
             netrc file : None
           offline mode : False


An unexpected error has occurred. Conda has prepared the above report.

If you suspect this error is being caused by a malfunctioning plugin,
consider using the --no-plugins option to turn off plugins.

Example: conda --no-plugins install <package>

Alternatively, you can set the CONDA_NO_PLUGINS environment variable on
the command line to run the command without plugins enabled.

Example: CONDA_NO_PLUGINS=true conda install <package>

CI build link: https://github.com/roryyorke/Slycot/actions/runs/40067689886/job/120794275193

Activity

  1. roryyorke commented on Oct 24, 2026

    @roryyorke
    roryyorke
    on Oct 24, 2026
    CollaboratorAuthor

    i've opened conda-incubator/setup-miniconda#587 to ask for assistance.

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