From e2d3b908303fc3effd064a4b5f30da11ffeb003f Mon Sep 17 00:00:00 2001
From: Orion Poplawski <orion@nwra.com>
Date: Sun, 15 Mar 2026 09:09:48 -0600
Subject: [PATCH 1/3] Bootstrap for EPEL10

---
 vtk.spec | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vtk.spec b/vtk.spec
index ae4c0fa..601db40 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -4,7 +4,7 @@
 %global _lto_cflags %{nil}
 
 # There is a circular dep with opencascade
-%bcond bootstrap 0
+%bcond bootstrap 1
 
 # OSMesa and X support are mutually exclusive.
 # TODO - buid separate OSMesa version if desired

From 852f7f83e68a84208fa01c541794823abee32da9 Mon Sep 17 00:00:00 2001
From: Orion Poplawski <orion@nwra.com>
Date: Sun, 15 Mar 2026 09:32:28 -0600
Subject: [PATCH 2/3] Build with bundled fast_float

---
 vtk.spec | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/vtk.spec b/vtk.spec
index 601db40..27b1cb7 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -115,7 +115,6 @@ BuildRequires:  cgnslib-devel
 BuildRequires:  cli11-devel
 BuildRequires:  eigen3-devel
 BuildRequires:  expat-devel
-BuildRequires:  fast_float-devel
 BuildRequires:  ffmpeg-free-devel
 %if %{with fmt}
 BuildRequires:  fmt-devel >= 8.1.0
@@ -226,8 +225,6 @@ Requires: cli11-static \
 # eigen3 is noarch and header-only \
 Requires: eigen3-static \
 Requires: expat-devel%{?_isa} \
-# fast_float is noarch and header-only \
-Requires: fast_float-devel \
 Requires: ffmpeg-free-devel%{?_isa} \
 %if %{with fmt} \
 Requires: fmt-devel%{?_isa} \
@@ -310,6 +307,7 @@ Provides: bundled(kwsys-systemtools)
 Provides: bundled(diy2)
 Provides: bundled(exodusII) = 2.0.0
 Provides: bundled(exprtk) = 2.71
+Provides: bundled(fast_flot) = 8.0.2
 Provides: bundled(fides)
 %if !%{with fmt}
 Provides: bundled(fmt) = 8.1.0
@@ -600,7 +598,7 @@ programming languages.
 # TODO - VPIC - not yet packaged
 # TODO - xdmf2 - not yet packaged
 # TODO - xdmf3 - not yet packaged
-for x in vtk{cgns,cli11,eigen,expat,fast_float,%{?with_fmt:fmt,}freetype,%{?with_gl2ps:gl2ps,}hdf5,jpeg,jsoncpp,libharu,libproj,libxml2,lz4,lzma,mpi4py,netcdf,nlohmannjson,ogg,pegtl,png,pugixml,sqlite,theora,tiff,utf8,zlib}
+for x in vtk{cgns,cli11,eigen,expat,%{?with_fmt:fmt,}freetype,%{?with_gl2ps:gl2ps,}hdf5,jpeg,jsoncpp,libharu,libproj,libxml2,lz4,lzma,mpi4py,netcdf,nlohmannjson,ogg,pegtl,png,pugixml,sqlite,theora,tiff,utf8,zlib}
 do
   rm -r ThirdParty/*/${x}
 done
@@ -608,12 +606,6 @@ done
 rm -r ThirdParty/xdmf3
 %endif
 
-# Remove version requirements
-sed -i -e '/VERSION *"/d' ThirdParty/fast_float/CMakeLists.txt
-
-# Remove version requirements
-sed -i -e '/VERSION *"/d' ThirdParty/fast_float/CMakeLists.txt
-
 # Remove unused KWSys items
 find Utilities/KWSys/vtksys/ -name \*.[ch]\* | grep -vE '^Utilities/KWSys/vtksys/([a-z].*|Configure|SharedForward|Status|String\.hxx|Base64|CommandLineArguments|Directory|DynamicLoader|Encoding|FStream|FundamentalType|Glob|MD5|Process|RegularExpression|System|SystemInformation|SystemTools)(C|CXX|UNIX)?\.' | xargs rm
 

From 890ea0df46e89d9fc5786a7a1f3730660db8f6c5 Mon Sep 17 00:00:00 2001
From: Orion Poplawski <orion@nwra.com>
Date: Sun, 15 Mar 2026 10:37:47 -0600
Subject: [PATCH 3/3] Specify internal fast_float

[skip changelog]
---
 vtk.spec | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vtk.spec b/vtk.spec
index 27b1cb7..516a6ee 100644
--- a/vtk.spec
+++ b/vtk.spec
@@ -690,6 +690,7 @@ find vtk-examples -type f | xargs chmod -R a-x
  -DVTK_MODULE_ENABLE_VTK_FiltersOpenTURNS:STRING=NO \\\
  -DVTK_MODULE_ENABLE_VTK_IOADIOS2:STRING=NO \\\
  -DVTK_MODULE_ENABLE_VTK_IOOpenVDB:STRING=NO \\\
+ -DVTK_MODULE_USE_EXTERNAL_VTK_fast_float:BOOL=OFF \\\
 %if !%{with fmt} \
  -DVTK_MODULE_USE_EXTERNAL_VTK_fmt:BOOL=OFF \\\
 %endif \