WIP: CI PLATFORM TESTING CONDAFORGE...DELETEME

.github/workflows/arm.yml

@@ -1,29 +1,33 @@
 name: ITK.Arm64
 
+# TEMPORARILY DISABLED on the add-conda-recipe branch — only runnable
+# via manual dispatch while the conda-recipe-test workflow exercises
+# the feature. Revert the trigger block below before merging.
 on:
-    push:
-        branches:
-            - main
-            - 'release*'
-        paths-ignore:
-            - '*.md'
-            - LICENSE
-            - NOTICE
-            - 'Documentation/**'
-            - 'Utilities/Debugger/**'
-            - 'Utilities/ITKv5Preparation/**'
-            - 'Utilities/Maintenance/**'
-            - 'Modules/Remote/*.remote.cmake'
-    pull_request:
-        paths-ignore:
-            - '*.md'
-            - LICENSE
-            - NOTICE
-            - 'Documentation/**'
-            - 'Utilities/Debugger/**'
-            - 'Utilities/ITKv5Preparation/**'
-            - 'Utilities/Maintenance/**'
-            - 'Modules/Remote/*.remote.cmake'
+    workflow_dispatch:
+    # push:
+    #     branches:
+    #         - main
+    #         - 'release*'
+    #     paths-ignore:
+    #         - '*.md'
+    #         - LICENSE
+    #         - NOTICE
+    #         - 'Documentation/**'
+    #         - 'Utilities/Debugger/**'
+    #         - 'Utilities/ITKv5Preparation/**'
+    #         - 'Utilities/Maintenance/**'
+    #         - 'Modules/Remote/*.remote.cmake'
+    # pull_request:
+    #     paths-ignore:
+    #         - '*.md'
+    #         - LICENSE
+    #         - NOTICE
+    #         - 'Documentation/**'
+    #         - 'Utilities/Debugger/**'
+    #         - 'Utilities/ITKv5Preparation/**'
+    #         - 'Utilities/Maintenance/**'
+    #         - 'Modules/Remote/*.remote.cmake'
 
 concurrency:
   group: '${{ github.workflow }}@${{ github.head_ref || github.ref }}'

.github/workflows/conda-recipe-test.yml

@@ -0,0 +1,94 @@
+name: ITK.CondaRecipe.Test
+
+# TEMPORARY WIP workflow: validate Utilities/conda-packages/ recipe on
+# Linux / Windows / macOS using rattler-build. Revert before merging the
+# feature branch.
+
+on:
+    push:
+        branches:
+            - main
+            - 'release*'
+            - 'add-conda-recipe*'
+    pull_request:
+        # Intentionally no paths filter — this is the temporary CI
+        # platform matrix; we want every push to rerun Linux/Windows/
+        # macOS so any core or Modules/ change is validated.
+    workflow_dispatch:
+
+concurrency:
+    group: '${{ github.workflow }}@${{ github.head_ref || github.ref }}'
+    cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+    conda-recipe:
+        runs-on: ${{ matrix.os }}
+        timeout-minutes: 240
+        strategy:
+            fail-fast: false
+            matrix:
+                os: [ubuntu-22.04, windows-2022, macos-15]
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v5
+              with:
+                  fetch-depth: 5
+
+            - name: Free disk space (Ubuntu)
+              if: matrix.os == 'ubuntu-22.04'
+              uses: BRAINSia/free-disk-space@v2
+              with:
+                  removalmode: "rmz"
+                  swap-storage:   "true"
+                  haskell:        "true"
+                  dotnet:         "true"
+                  docker-images:  "false"
+                  tool-cache:     "true"
+                  android:        "false"
+                  large-packages: "true"
+                  mandb:          "true"
+
+            - name: Disk space reporting (before build)
+              shell: bash
+              run: |
+                  echo "****** df -h"
+                  df -h
+                  echo "****** df -h /"
+                  df -h /
+
+            - name: Set up Pixi
+              uses: prefix-dev/setup-pixi@v0.8.1
+
+            - name: Build conda packages (rattler-build)
+              shell: bash
+              env:
+                  ITK_CONDA_USE_CCACHE: "0"
+              run: |
+                  pixi run --environment dev rattler-build build --experimental \
+                      --recipe Utilities/conda-packages/recipe.yaml \
+                      --output-dir "${{ runner.temp }}/itk-conda-channel/"
+
+            - name: List produced packages
+              if: always()
+              shell: bash
+              run: |
+                  echo "****** channel contents"
+                  ls -lh "${{ runner.temp }}/itk-conda-channel/"*/ 2>/dev/null \
+                      || ls -lh "${{ runner.temp }}/itk-conda-channel/" 2>/dev/null \
+                      || echo "(no channel contents found)"
+
+            - name: Disk space reporting (after build)
+              if: always()
+              shell: bash
+              run: |
+                  echo "****** df -h"
+                  df -h
+
+            - name: Upload conda packages
+              if: always()
+              uses: actions/upload-artifact@v4
+              with:
+                  name: itk-conda-packages-${{ matrix.os }}
+                  path: ${{ runner.temp }}/itk-conda-channel/**/*.conda
+                  if-no-files-found: warn
+                  retention-days: 7

.github/workflows/pixi.yml

@@ -1,29 +1,33 @@
 name: ITK.Pixi
 
+# TEMPORARILY DISABLED on the add-conda-recipe branch — only runnable
+# via manual dispatch while the conda-recipe-test workflow exercises
+# the feature. Revert the trigger block below before merging.
 on:
-    push:
-        branches:
-            - main
-            - 'release*'
-        paths-ignore:
-            - '*.md'
-            - LICENSE
-            - NOTICE
-            - 'Documentation/**'
-            - 'Utilities/Debugger/**'
-            - 'Utilities/ITKv5Preparation/**'
-            - 'Utilities/Maintenance/**'
-            - 'Modules/Remote/*.remote.cmake'
-    pull_request:
-        paths-ignore:
-            - '*.md'
-            - LICENSE
-            - NOTICE
-            - 'Documentation/**'
-            - 'Utilities/Debugger/**'
-            - 'Utilities/ITKv5Preparation/**'
-            - 'Utilities/Maintenance/**'
-            - 'Modules/Remote/*.remote.cmake'
+    workflow_dispatch:
+    # push:
+    #     branches:
+    #         - main
+    #         - 'release*'
+    #     paths-ignore:
+    #         - '*.md'
+    #         - LICENSE
+    #         - NOTICE
+    #         - 'Documentation/**'
+    #         - 'Utilities/Debugger/**'
+    #         - 'Utilities/ITKv5Preparation/**'
+    #         - 'Utilities/Maintenance/**'
+    #         - 'Modules/Remote/*.remote.cmake'
+    # pull_request:
+    #     paths-ignore:
+    #         - '*.md'
+    #         - LICENSE
+    #         - NOTICE
+    #         - 'Documentation/**'
+    #         - 'Utilities/Debugger/**'
+    #         - 'Utilities/ITKv5Preparation/**'
+    #         - 'Utilities/Maintenance/**'
+    #         - 'Modules/Remote/*.remote.cmake'
 
 concurrency:
   group: '${{ github.workflow }}@${{ github.head_ref || github.ref }}'

.gitignore

@@ -1,6 +1,9 @@
 # Do not add ExternalData module staging files
 .ExternalData*
 
+# condapackage uses output as the standard output directory for rattler-builds
+output
+
 # back-up files
 *~
 *.bak

CMake/ITKModuleMacros.cmake

@@ -191,6 +191,35 @@ macro(itk_module_impl)
         message(DEBUG "Linking ${itk-module} to namespaced dependency: ${dep}")
         list(APPEND _libraries "${dep}")
       else()
+        # Decide whether to apply the ITK:: namespace.
+        # External IMPORTED targets (e.g. hdf5-shared from find_package(HDF5)
+        # in module-mode, bare GDCM targets, etc.) ship under the upstream
+        # package's own naming and MUST NOT be renamed into the ITK::
+        # namespace — doing so creates a non-existent target in the
+        # INTERFACE_LINK_LIBRARIES of ${itk-module}Module and fails CMake's
+        # generate step. ITK-owned targets (either already defined in this
+        # session as non-imported, or to be defined later via
+        # add_subdirectory into a bundled third-party) still receive the
+        # ITK:: namespace plus the backward-compat EXPORT_CODE shims below.
+        set(_itk_apply_namespace TRUE)
+        if(TARGET ${dep})
+          get_target_property(_itk_dep_imported ${dep} IMPORTED)
+          if(_itk_dep_imported)
+            set(_itk_apply_namespace FALSE)
+            message(
+              DEBUG
+              "Linking ${itk-module} to external imported target: ${dep}"
+            )
+          endif()
+          unset(_itk_dep_imported)
+        endif()
+        if(NOT _itk_apply_namespace)
+          list(APPEND _libraries "${dep}")
+          unset(_itk_apply_namespace)
+          continue()
+        endif()
+        unset(_itk_apply_namespace)
+
         list(
           APPEND
           _libraries
@@ -597,6 +626,32 @@ macro(itk_module_link_dependencies)
       endif()
     endforeach()
   endforeach()
+
+  # Link COMPILE_DEPENDS as PRIVATE so this module's own compilation picks up
+  # transitive INTERFACE_INCLUDE_DIRECTORIES (e.g. Eigen3::Eigen via
+  # ITKEigen3Module) through modern CMake target properties. PRIVATE means
+  # the includes flow in but nothing leaks into this module's own
+  # INTERFACE_LINK_LIBRARIES; consumers already get these transitively via
+  # ${itk-module}Module's INTERFACE chain, which spans TRANSITIVE_DEPENDS
+  # (PUBLIC_DEPENDS + COMPILE_DEPENDS). Recover COMPILE_DEPENDS as
+  # TRANSITIVE_DEPENDS minus PUBLIC_DEPENDS because itk_module() unsets
+  # the original COMPILE_DEPENDS list.
+  foreach(dep IN LISTS ITK_MODULE_${itk-module}_TRANSITIVE_DEPENDS)
+    if(NOT dep IN_LIST ITK_MODULE_${itk-module}_PUBLIC_DEPENDS)
+      if(
+        ITK_MODULE_${dep}_LOADED
+        OR
+          TARGET
+            ${ITK_MODULE_${itk-module}_TARGETS_NAMESPACE}${dep}Module
+      )
+        target_link_libraries(
+          ${itk-module}
+          PRIVATE
+            ${ITK_MODULE_${itk-module}_TARGETS_NAMESPACE}${dep}Module
+        )
+      endif()
+    endif()
+  endforeach()
 endmacro()
 
 macro(itk_module_test)

Modules/Nonunit/Review/itk-module.cmake

@@ -10,6 +10,8 @@ itk_module(
   ITKReview
   DEPENDS
     ITKIOImageBase
+  PRIVATE_DEPENDS
+    ITKZLIB
   COMPILE_DEPENDS
     ITKAnisotropicSmoothing
     ITKAntiAlias

Modules/ThirdParty/DoubleConversion/CMakeLists.txt

@@ -11,15 +11,28 @@ mark_as_advanced(ITK_USE_SYSTEM_DOUBLECONVERSION)
 
 if(ITK_USE_SYSTEM_DOUBLECONVERSION)
   find_package(double-conversion 3.1.6 REQUIRED)
-  get_target_property(
-    ITKDoubleConversion_INCLUDE_DIRS
-    double-conversion::double-conversion
-    INTERFACE_INCLUDE_DIRECTORIES
+  # Use the imported target directly; CMake resolves it per-platform
+  # (Linux: .so, Windows: .lib import library). Do not use
+  # get_target_property(... LOCATION), which yields the .dll on Windows
+  # and produces LNK1107 ("invalid or corrupt file") at link time.
+  # INTERFACE_INCLUDE_DIRECTORIES propagates through the target, so no
+  # explicit ITKDoubleConversion_INCLUDE_DIRS assignment is required.
+  set(ITKDoubleConversion_LIBRARIES double-conversion::double-conversion)
+
+  # Ensure downstream consumers of the installed ITKConfig have the
+  # double-conversion:: imported target before ITKTargets.cmake is
+  # processed (which references it in INTERFACE_LINK_LIBRARIES).
+  set(
+    ITKDoubleConversion_EXPORT_CODE_INSTALL
+    "find_package(double-conversion 3.1.6 REQUIRED)"
   )
-  get_target_property(
-    ITKDoubleConversion_LIBRARIES
-    double-conversion::double-conversion
-    LOCATION
+  set(
+    ITKDoubleConversion_EXPORT_CODE_BUILD
+    "
+    if(NOT ITK_BINARY_DIR)
+      find_package(double-conversion 3.1.6 REQUIRED)
+    endif()
+    "
   )
 else()
   set(

Modules/ThirdParty/HDF5/CMakeLists.txt

@@ -40,7 +40,7 @@ endif()
         hdf5_cpp-shared
         hdf5-shared
         hdf5_hl-shared
-        hdf5_hl_cpp
+        hdf5_hl_cpp-shared
       )
     elseif(TARGET hdf5::hdf5-shared)
       set(
@@ -75,7 +75,7 @@ endif()
         hdf5_cpp-static
         hdf5-static
         hdf5_hl-static
-        hdf5_hl_cpp
+        hdf5_hl_cpp-static
       )
     elseif(TARGET hdf5::hdf5-static)
       set(