# Dolfinx v0.10 in spack

**URL:** <https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704>\
**Category:** dolfinx\
**Created:** [May 14, 2026, 12:45pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704 "2026-05-14T12:45:23Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 14, 2026, 12:45pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/1 "2026-05-14T12:45:24Z")

</div>

Hi,

I need to have dolfinx v0.10 in spack, but when I add “spack add py-fenics-dolfinx@0.10” and then “install”, it mentions that this version of donfinx is not in the spack. I found from “[https://fenicsproject.discourse.group/t/v0-10-0-of-dolfinx/18297](https://fenicsproject.discourse.group/t/v0-10-0-of-dolfinx/18297)” that it is not added to spack. I am wondering is there any other ways that I can manually add it to spack?

Thank you in advance,

---

<div class="post-metadata">

**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [May 14, 2026, 3:38pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/2 "2026-05-14T15:38:16Z")

</div>

See:

> **[GitHub - FEniCS/spack-fenics: Spack package repository overlay for FEniCS](https://github.com/FEniCS/spack-fenics)**
>
> Spack package repository overlay for FEniCS

We have had issues with spack being very slow at processing PR (as they have a massive amount of packages), and have therefore gone for the overlay solution, where on adds repos on top of the existing spack packages. This is also done for quite a few of my own packages, see:

> **[GitHub - scientificcomputing/spack\_repos: Spack-repositories hosted by Scientific Computing,...](https://github.com/scientificcomputing/spack_repos)**
>
> Spack-repositories hosted by Scientific Computing, following: https://spack.readthedocs.io/en/latest/repositories.html

---

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 14, 2026, 4:01pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/3 "2026-05-14T16:01:23Z")

</div>

Thank you for your response.

As I understood, from the second link, after doing “repo add”, I can add dolfinx@0.10 by “spack add py-dolfinx@0.10”. Am I right?

---

<div class="post-metadata">

**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [May 14, 2026, 4:02pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/4 "2026-05-14T16:02:11Z")

</div>

Yes, that is correct, I would recommend `py-fenics-dolfinx@0.10.0+petsc4py ^fenics-dolfinx+adios2 ^petsc+mumps+hypre` so that you get good outputting IO and some solvers from PETSc.

---

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 14, 2026, 4:04pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/5 "2026-05-14T16:04:37Z")

</div>

Thank you so much. I will do your suggestion.

---

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 17, 2026, 6:10pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/6 "2026-05-17T18:10:28Z")

</div>

Hi

I have tried what you suggested me and I got this error when I did “spack install”

```auto

 g4qudo6 fenics-dolfinx@0.10.0.post4 failed

In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/MPI.h:9:

/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/Timer.h:136:3: error: missing ‘typename’ prior to dependent type name ‘T::duration’
T::duration _acc = T::duration::zero();
^ ~~~~~~~~~~
typename
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/TimeLogger.cpp:8:
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/MPI.h:9:
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/Timer.h:136:3: error: missing ‘typename’ prior to dependent type name ‘T::duration’
T::duration _acc = T::duration::zero();
^ ~~~~~~~~~~
typename
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/timing.cpp:10:
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/Timer.h:136:3: error: missing ‘typename’ prior to dependent type name ‘T::duration’
T::duration _acc = T::duration::zero();
^ ~~~~~~~~~~
typename
1 error generated.
make[2]: *** [dolfinx/CMakeFiles/dolfinx.dir/build.make:166: dolfinx/CMakeFiles/dolfinx.dir/common/timing.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs…
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/IndexMap.cpp:8:
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/IndexMap.h:10:
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/MPI.h:9:
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-0.10.0.post4-g4qudo6fiudw7hdt4dvxhb43cwk5lrgn/spack-src/cpp/dolfinx/common/Timer.h:136:3: error: missing ‘typename’ prior to dependent type name ‘T::duration’

```

---

<div class="post-metadata">

**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [May 18, 2026, 9:24am UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/7 "2026-05-18T09:24:29Z")

</div>

> [@Iman](#):
>
> ```auto
> Timer.h:136:3: error: missing ‘typename’ prior to dependent type name ‘T::duration’
> T::duration _acc = T::duration::zero();
> 
> ```

This has been fixed on main by @schnellerhase ([Fix `clang@15` compile by schnellerhase · Pull Request #4011 · FEniCS/dolfinx · GitHub](https://github.com/FEniCS/dolfinx/pull/4011))  
Could you try:  
` py-fenics-dolfinx@main+petsc4py ^fenics-dolfinx+adios2 ^petsc+mumps+hypre`

---

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 18, 2026, 9:29pm UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/8 "2026-05-18T21:29:36Z")

</div>

> [@dokken](#):
>
> py-fenics-dolfinx@0.10.0+petsc4py ^fenics-dolfinx+adios2 ^petsc+mumps+hypre

Thank you for your response. I still have a problem,

I carried out these steps:

1-`git clone --depth=2 ` [GitHub - spack/spack: A flexible package manager that supports multiple versions, configurations, platforms, and compilers. · GitHub](https://github.com/spack/spack.git)

2-`. spack/share/spack/setup-env.sh`

3- `spack env create fenicsx-env`

`spack env activate fenicsx-env`

4-`spack repo add ` [GitHub - FEniCS/spack-fenics: Spack package repository overlay for FEniCS · GitHub](https://github.com/FEniCS/spack-fenics.git)

5-`spack repo add ``https://github.com/scientificcomputing/spack`

6-`spack add py-fenics-dolfinx@main+petsc4py ^fenics-dolfinx+adios2 ^petsc+mumps+hypre`

7-`spack concretize`

8-`spack install`

and I got this error:

```auto
“
inoeqrq fenics-dolfinx@main failed: /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr-2urz53um.log (15s)
– lines 168 to 328 –

/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:116:31: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_cells_matrix’
for (int k = 0; k < bs1; ++k)
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:85:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, cells1] = dofmap1;
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:118:21: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_cells_matrix’
if (bc1[bs1 * dof + k])
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:85:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, cells1] = dofmap1;
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:290:31: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_entities’
for (int k = 0; k < bs1; ++k)
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:258:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, entities1] = dofmap1;
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:292:21: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_entities’
if (bc1[bs1 * dof + k])
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:258:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, entities1] = dofmap1;
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:498:31: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_interior_facets’
for (int k = 0; k < bs1; ++k)
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:427:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, facets1] = dofmap1;
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:500:21: error: reference to local binding ‘bs1’ declared in enclosing function ‘dolfinx::fem::impl::assemble_interior_facets’
if (bc1[bs1 * dof + k])
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/assemble_matrix_impl.h:427:22: note: ‘bs1’ declared here
const auto [dmap1, bs1, facets1] = dofmap1;
^
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/DofMap.cpp:7:
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/DofMap.h:12:
In file included from /tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/ElementDofLayout.h:9:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/array:40:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/stl_algobase.h:65:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/stl_iterator_base_types.h:71:
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:979:13: error: no matching function for call to ‘__begin’
= decltype(ranges:: __cust_access::__ begin(std::declval<_Tp&>()));
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/ranges_base.h:590:5: note: in instantiation of template type alias ‘__range_iter_t’ requested here
using iterator_t = std:: __detail::__ range_iter_t<_Tp>;
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/ranges_util.h:98:43: note: in instantiation of template type alias ‘iterator_t’ requested here
data() requires contiguous_iterator<iterator_t<_Derived>>
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/ranges_util.h:203:29: note: in instantiation of template class ‘std::ranges::view_interface<std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized>>’ requested here
class subrange : public view_interface<subrange<_It, _Sent, _Kind>>
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/ranges_algo.h:1179:7: note: in instantiation of template class ‘std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized>’ requested here
operator()(_Range&& __r, _Comp__ comp = {}, _Proj __proj = {}) const
^
/tmp/izahed/spack-stage/spack-stage-fenics-dolfinx-main-inoeqrqtrocw5pgqns4ztt7vm5xykldr/spack-src/cpp/dolfinx/fem/DirichletBC.h:234:53: note: in instantiation of function template specialization ‘std::ranges::__unique_fn::operator()<std::vector<std::array<int, 2>> &, std::identity, std::ranges::equal_to>’ requested here
auto [unique_end, range_end] = std::ranges::unique(bc_dofs);
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:963:7: note: candidate template ignored: constraints not satisfied [with _Tp = std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized>]
__begin(_Tp&__t)
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:961:16: note: because ‘is_array_v<std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2> > >, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2> > >, std::ranges::subrange_kind::sized> >’ evaluated to false
requires is_array_v<_Tp> || __member_begin<_Tp&> ||__ adl_begin<_Tp&>
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:961:35: note: and ‘std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized> &’ does not satisfy ‘__member_begin’
requires is_array_v<_Tp> || __member_begin<_Tp&> ||__ adl_begin<_Tp&>
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:944:23: note: because ‘__decay_copy(__t.begin())’ would be invalid: no member named ‘begin’ in ‘std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized>’
{ __decay_copy(__t.begin()) } → input_or_output_iterator;
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:961:59: note: and ‘std::ranges::subrange< __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, __gnu_cxx::__ normal_iterator<std::array<int, 2> *, std::vector<std::array<int, 2>>>, std::ranges::subrange_kind::sized> &’ does not satisfy ‘__adl_begin’
requires is_array_v<_Tp> || __member_begin<_Tp&> ||__ adl_begin<_Tp&>
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:955:19: note: because ‘__decay_copy(begin(__t))’ would be invalid: call to deleted function ‘begin’
{ __decay_copy(begin(__t)) } → input_or_output_iterator;
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/iterator_concepts.h:979:13: error: no matching function for call to ‘__begin’“

```

---

<div class="post-metadata">

**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [May 19, 2026, 8:49am UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/9 "2026-05-19T08:49:27Z")

</div>

> [@Iman](#):
>
> ```auto
> In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/array:40:
> 
> ```

It seems like you are using a rather old gcc compiler (as gcc is at gcc 16 atm).  
Could you post the output of

```bash
spack compiler list

```

and also do

```bash
spack compiler find

```

If you have a newer version of gcc available, could you try using

```bash
spack add py-fenics-dolfinx@main+petsc4py ^fenics-dolfinx+adios2 ^petsc+mumps+hypre %gcc@XX.Y.Z

```

where `XX.Y.Z` is the compiler version, for instance `%gcc@13.3.0`

---

<div class="post-metadata">

**Author:** ![Iman](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/iman/32/9524_2.png) [@Iman](https://fenicsproject.discourse.group/u/Iman)\
**Post date:** [May 19, 2026, 9:08am UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/11 "2026-05-19T09:08:26Z")

</div>

I did, the available compilers are  
`– gcc ubuntu22.04-x86_64 ---------------------------------------`  
`[e] gcc@11.4.0 [e] gcc@10.5.0`

`– llvm ubuntu22.04-x86_64 --------------------------------------`  
`[e] llvm@14.0.0`

and I did “spack compiler find”  
`==> Found no new compilers`  
`==> Compilers are defined in the following files:`  
`/home/izahed/preCiCE/spack/var/spack/environments/fenicsx-env/spack.yaml`

I will install the new version of gcc, and I will report the results

---

<div class="post-metadata">

**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [May 19, 2026, 10:20am UTC](https://fenicsproject.discourse.group/t/dolfinx-v0-10-in-spack/19704/12 "2026-05-19T10:20:09Z")

</div>

You can get spack to install it:

```auto
spack install gcc@XX.Y.Z

```

and then do spack compiler find.