ENH: Pre-populate migration sentinels from the ITK 6 migration guide

hjmjohnson · hjmjohnson · commit 938d307dfa62 · 2026-07-19T09:49:06.000-05:00
Every PR that added a downstream-visible change to the ITK 6 migration
guide gets a sentinel, so downstream projects can gate on any of them
before a release contains one.

The 6.0 prerelease tags all report ITK_VERSION 6.0.0, so version
comparison cannot separate these changes from each other or from current
main; the sentinel is the only signal that distinguishes them.

Derived by mapping the guide's history to pull requests. Commits that
edited the guide without introducing a migration -- a typo fix, a
master-to-main prose update, a rewrite of an existing migration's
wording, and the commit that created the file -- are excluded.
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4704.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4704.md
@@ -0,0 +1 @@
+ENH: Finalize ITKv5 const function API change (PR #4704).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4715.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4715.md
@@ -0,0 +1 @@
+ENH: Remove ITKv4 compatibility support (PR #4715).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4729.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4729.md
@@ -0,0 +1 @@
+ENH: Remove features that were deprecated in ITKv5 (PR #4729).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4737.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4737.md
@@ -0,0 +1 @@
+Remove cxx aliases (PR #4737).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4744.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4744.md
@@ -0,0 +1 @@
+STYLE: Remove outdated maintenance scripts (PR #4744).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR4925.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR4925.md
@@ -0,0 +1 @@
+ENH: Let `PointSet::Clone()` do a "deep copy", instead of no copy at all (PR #4925).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5076.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5076.md
@@ -0,0 +1 @@
+DOC: Note migration guide replacing `CoordinateType` with `CoordRepType` (PR #5076).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5286.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5286.md
@@ -0,0 +1 @@
+ENH: Remove dummy VNLInstantiation library (PR #5286).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5382.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5382.md
@@ -0,0 +1 @@
+DOC: Add migration documentation for AnatomicalOrientation (PR #5382).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5721.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5721.md
@@ -0,0 +1 @@
+Modernize ITK Module System with CMake Interface Libraries (PR #5721).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5752.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5752.md
@@ -0,0 +1 @@
+COMP: Remove undefined long double swig wrapping (PR #5752).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5775.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5775.md
@@ -0,0 +1 @@
+BUG: Fix image_from_array shape handling for F-contiguous arrays (PR #5775).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5776.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5776.md
@@ -0,0 +1 @@
+ENH: Release Python GIL during ITK operations (PR #5776).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5791.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5791.md
@@ -0,0 +1 @@
+DOC: Add migration guide to updated GTest target names (PR #5791).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5803.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5803.md
@@ -0,0 +1 @@
+Deprecate `ImageConstIterator::GetIndex()`, use ComputeIndex() in tests and examples (PR #5803).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR5995.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR5995.md
@@ -0,0 +1 @@
+COMP: Use std::unique_ptr in FEMLinearSystemWrapperDenseVNL (PR #5995).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6003.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6003.md
@@ -0,0 +1 @@
+ENH: Use NumberToString for lossless float metadata in NIfTI reader (PR #6003).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6144.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6144.md
@@ -0,0 +1 @@
+COMP: Require VTK >= 9.1 in ITKVtkGlue; drop legacy module-system shims (PR #6144).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6183.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6183.md
@@ -0,0 +1 @@
+ENH: Replace custom LazyITKModule with native PEP 562 lazy loading (PR #6183).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6427.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6427.md
@@ -0,0 +1 @@
+ENH: Decouple itk::Math from vnl_math (constants and functions) (PR #6427).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6441.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6441.md
@@ -0,0 +1 @@
+ENH: PocketFFT as a permissive, dependency-free default FFT backend (PR #6441).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6469.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6469.md
@@ -0,0 +1 @@
+ENH: Reimplement GDCMSeriesFileNames on gdcm::IPPSorter/Scanner (drop deprecated SerieHelper) (PR #6469).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6475.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6475.md
@@ -0,0 +1 @@
+ENH: Eigen-backed itk eigendecompositions; deprecate vnl_*_eigensystem and eispack (PR #6475).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6487.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6487.md
@@ -0,0 +1 @@
+ENH: Add Eigen-backed itk::Math::SVD and migrate ITK's vnl_svd consumers (PR #6487).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6504.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6504.md
@@ -0,0 +1 @@
+COMP: Modernize deprecated macros in ingested filter/IO modules (PR #6504).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6524.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6524.md
@@ -0,0 +1 @@
+ENH: Retire FEM modules to InsightSoftwareConsortium/ITKFEM remote (PR #6524).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6553.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6553.md
@@ -0,0 +1 @@
+DOC: Document itkDCMTKFileReader privatization in ITKv6 migration guide (PR #6553).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6569.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6569.md
@@ -0,0 +1 @@
+BUG: Fix JointHistogramMutualInformation metric marginals and derivative (PR #6569).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6573.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6573.md
@@ -0,0 +1 @@
+Deprecate mpl::IsNumber (PR #6573).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6594.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6594.md
@@ -0,0 +1 @@
+BUG: Center collapsed-axis origin in projection and accumulate filters (PR #6594).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6602.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6602.md
@@ -0,0 +1 @@
+BUG: Smooth structure tensor with an isotropic Gaussian kernel (PR #6602).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6635.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6635.md
@@ -0,0 +1 @@
+BUG: Seed entropy threshold calculators with NonpositiveMin (PR #6635).
diff --git a/CMake/MigrationSentinels/ITK_MIGRATION_PR6649.md b/CMake/MigrationSentinels/ITK_MIGRATION_PR6649.md
@@ -0,0 +1 @@
+DOC: note HDF5ImageIO compression-default change in migration guide (PR #6649).

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+ENH: Finalize ITKv5 const function API change (PR #4704).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+ENH: Remove ITKv4 compatibility support (PR #4715).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+ENH: Remove features that were deprecated in ITKv5 (PR #4729).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+STYLE: Remove outdated maintenance scripts (PR #4744).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+ENH: Let `PointSet::Clone()` do a "deep copy", instead of no copy at all (PR #4925).
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+DOC: Note migration guide replacing `CoordinateType` with `CoordRepType` (PR #5076).
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+ENH: Remove dummy VNLInstantiation library (PR #5286).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+DOC: Add migration documentation for AnatomicalOrientation (PR #5382).`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Modernize ITK Module System with CMake Interface Libraries (PR #5721).`