Hi Anders,
that helped a bit, but now I seem to run into some recursion problem during the test pahse of the package.
It tries to find a iocsh command file in :
/home/wuestenf/micromamba/envs/conda-build/conda-bld/iocstats_1773318749191/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/ep/iocStats.iocsh
which does not exists, becaus it should end with placehold/epics_modules/iocstat/iocStat.iocsh.
Do you have an idea how this path name is constructed?
I am using the following packages in my environment:
Name Version Build Channel
──────────────────────────────────────────────────────────────────────────────────
PythonQwt 0.12.5 pypi_0 pypi
_openmp_mutex 4.5 20_gnu conda-forge
aiohttp 3.8.4 pypi_0 pypi
aiosignal 1.3.1 pypi_0 pypi
ansible 9.1.0 pypi_0 pypi
ansible-core 2.16.2 pypi_0 pypi
apischema 0.18.0 pypi_0 pypi
archspec 0.2.5 pyhd8ed1ab_0 conda-forge
async-timeout 4.0.2 pypi_0 pypi
attrs 25.4.0 pyhcf101f3_1 conda-forge
backports.zstd 1.3.0 py310h69bd2ac_0 conda-forge
beautifulsoup4 4.14.3 pyha770c72_0 conda-forge
boltons 25.0.0 pyhd8ed1ab_0 conda-forge
brotli-python 1.2.0 py310hba01987_1 conda-forge
bzip2 1.0.8 hda65f42_9 conda-forge
c-ares 1.34.6 hb03c661_0 conda-forge
ca-certificates 2026.2.25 hbd8a1cb_0 conda-forge
certifi 2026.2.25 pyhd8ed1ab_0 conda-forge
cffi 2.0.0 py310he7384ee_1 conda-forge
chardet 5.2.0 pyhd8ed1ab_3 conda-forge
charset-normalizer 3.4.5 pyhd8ed1ab_0 conda-forge
click 8.3.1 pyh8f84b5b_1 conda-forge
conda 26.1.1 py310hff52083_0 conda-forge
conda-build 26.1.0 pyh31ec981_102 conda-forge
conda-index 0.7.0 pyhd8ed1ab_0 conda-forge
conda-libmamba-solver 25.11.0 pyhd8ed1ab_1 conda-forge
conda-package-handling 2.4.0 pyh7900ff3_2 conda-forge
conda-package-streaming 0.12.0 pyhd8ed1ab_0 conda-forge
conda-verify 3.4.2 pyhd8ed1ab_1 conda-forge
cpp-expected 1.3.1 h171cf75_0 conda-forge
distro 1.9.0 pyhd8ed1ab_1 conda-forge
epics-base 7.0.9.0 pl5321h2669dad_10 conda-forge
epicsmacrolib 0.6.0 pypi_0 pypi
evalidate 2.0.5 pyhe01879c_0 conda-forge
figure 1.1 pypi_0 pypi
filelock 3.25.1 pyhd8ed1ab_0 conda-forge
fmt 12.1.0 hff5e90c_0 conda-forge
frozendict 2.4.7 py310h7c4b9e2_0 conda-forge
frozenlist 1.3.3 pypi_0 pypi
future 1.0.0 pyhd8ed1ab_2 conda-forge
graphql-core 3.2.3 pypi_0 pypi
graphviz 0.17 pypi_0 pypi
guidata 3.1.0 pypi_0 pypi
guiqwt 4.4.4 pypi_0 pypi
h2 4.3.0 pyhcf101f3_0 conda-forge
h5py 3.11.0 pypi_0 pypi
hpack 4.1.0 pyhd8ed1ab_0 conda-forge
hyperframe 6.1.0 pyhd8ed1ab_0 conda-forge
icu 78.2 h33c6efd_0 conda-forge
idna 3.11 pyhd8ed1ab_0 conda-forge
jinja2 3.1.6 pyhcf101f3_1 conda-forge
jsonpatch 1.33 pyhd8ed1ab_1 conda-forge
jsonpointer 3.0.0 pyhcf101f3_3 conda-forge
jsonschema 4.26.0 pyhcf101f3_0 conda-forge
jsonschema-specifications 2025.9.1 pyhcf101f3_0 conda-forge
keyutils 1.6.3 hb9d3cd8_0 conda-forge
krb5 1.22.2 ha1258a1_0 conda-forge
lark 1.1.5 pypi_0 pypi
ld_impl_linux-64 2.45.1 default_hbd61a6d_101 conda-forge
libarchive 3.8.6 gpl_hc2c16d8_100 conda-forge
libcurl 8.19.0 hcf29cc6_0 conda-forge
libedit 3.1.20250104 pl5321h7949ede_0 conda-forge
libev 4.33 hd590300_2 conda-forge
libevent 2.1.12 hf998b51_1 conda-forge
libexpat 2.7.4 hecca717_0 conda-forge
libffi 3.5.2 h3435931_0 conda-forge
libgcc 15.2.0 he0feb66_18 conda-forge
libgcc-ng 15.2.0 h69a702a_18 conda-forge
libgomp 15.2.0 he0feb66_18 conda-forge
libiconv 1.18 h3b78370_2 conda-forge
liblief 0.17.1 hecca717_0 conda-forge
liblzma 5.8.2 hb03c661_0 conda-forge
libmamba 2.5.0 hd28c85e_0 conda-forge
libmamba-spdlog 2.5.0 h12fcf84_0 conda-forge
libmambapy 2.5.0 py310h74f1d5f_0 conda-forge
libnghttp2 1.67.0 had1ee68_0 conda-forge
libnsl 2.0.1 hb9d3cd8_1 conda-forge
libsolv 0.7.35 h9463b59_0 conda-forge
libsqlite 3.52.0 hf4e2dac_0 conda-forge
libssh2 1.11.1 hcf80075_0 conda-forge
libstdcxx 15.2.0 h934c35e_18 conda-forge
libstdcxx-ng 15.2.0 hdf11a46_18 conda-forge
libuuid 2.41.3 h5347b49_0 conda-forge
libxcrypt 4.4.36 hd590300_1 conda-forge
libxml2 2.15.2 he237659_0 conda-forge
libxml2-16 2.15.2 hca6bf5a_0 conda-forge
libzlib 1.3.1 hb9d3cd8_2 conda-forge
lz4-c 1.10.0 h5888daf_1 conda-forge
lzo 2.10 h280c20c_1002 conda-forge
markupsafe 3.0.3 py310h3406613_1 conda-forge
mbedtls 3.6.3.1 h5888daf_0 conda-forge
menuinst 2.4.2 py310hff52083_0 conda-forge
msgpack-python 1.1.2 py310h03d9f68_1 conda-forge
multidict 6.0.4 pypi_0 pypi
ncurses 6.5 h2d0b736_3 conda-forge
nlohmann_json-abi 3.12.0 h0f90c79_1 conda-forge
openssl 3.6.1 h35e630c_1 conda-forge
packaging 26.0 pyhcf101f3_0 conda-forge
patch 2.8 hb03c661_1002 conda-forge
patchelf 0.17.2 h58526e2_0 conda-forge
perl 5.32.1 7_hd590300_perl5 conda-forge
pip 26.0.1 pyh8b19718_0 conda-forge
pkginfo 1.12.1.2 pyhd8ed1ab_0 conda-forge
platformdirs 4.9.4 pyhcf101f3_0 conda-forge
plot 0.6.5 pypi_0 pypi
pluggy 1.6.0 pyhf9edf01_1 conda-forge
psutil 7.2.2 py310h139afa4_0 conda-forge
pvxs 1.5.0 pl5321h579f993_1 conda-forge
py-lief 0.17.1 py310hea6c23e_0 conda-forge
pybind11-abi 11 hc364b38_1 conda-forge
pycosat 0.6.6 py310h7c4b9e2_3 conda-forge
pycparser 2.22 pyh29332c3_1 conda-forge
pyepics 3.5.6 pypi_0 pypi
pysocks 1.7.1 pyha55dd90_7 conda-forge
python 3.10.20 h3c07f61_0_cpython conda-forge
python-libarchive-c 5.3 pyhe01879c_1 conda-forge
python_abi 3.10 8_cp310 conda-forge
pytz 2025.2 pyhd8ed1ab_0 conda-forge
pyyaml 6.0.3 py310h3406613_1 conda-forge
readline 8.3 h853b02a_0 conda-forge
referencing 0.37.0 pyhcf101f3_0 conda-forge
reproc 14.2.5.post0 hb9d3cd8_0 conda-forge
reproc-cpp 14.2.5.post0 h5888daf_0 conda-forge
requests 2.32.5 pyhcf101f3_1 conda-forge
require 6.0.0 h2ce4039_1 ess-conda-local
resolvelib 1.0.1 pypi_0 pypi
ripgrep 15.1.0 hdab8a38_0 conda-forge
rpds-py 0.30.0 py310hd8f68c5_0 conda-forge
ruamel.yaml 0.18.17 py310h139afa4_2 conda-forge
ruamel.yaml.clib 0.2.15 py310h139afa4_1 conda-forge
setuptools 82.0.1 pyh332efcf_0 conda-forge
simdjson 4.2.4 hb700be7_0 conda-forge
six 1.17.0 pyhe01879c_1 conda-forge
soupsieve 2.8.3 pyhd8ed1ab_0 conda-forge
spdlog 1.17.0 hab81395_1 conda-forge
tk 8.6.13 noxft_h366c992_103 conda-forge
tomli 2.4.0 pyhcf101f3_0 conda-forge
tqdm 4.67.3 pyh8f84b5b_0 conda-forge
truststore 0.10.4 pyhcf101f3_0 conda-forge
typing 3.7.4.3 pypi_0 pypi
typing-extensions 4.15.0 h396c80c_0 conda-forge
typing_extensions 4.15.0 pyhcf101f3_0 conda-forge
tzdata 2025c hc9c84f9_1 conda-forge
urllib3 2.6.3 pyhd8ed1ab_0 conda-forge
whatrecord 0.4.4 pypi_0 pypi
wheel 0.46.3 pyhd8ed1ab_0 conda-forge
yaml 0.2.5 h280c20c_3 conda-forge
yaml-cpp 0.8.0 h3f2d84a_0 conda-forge
yarl 1.9.2 pypi_0 pypi
zstandard 0.25.0 py310h139afa4_1 conda-forge
zstd 1.5.7 hb78ec9c_6 conda-forge
Regards,
Jörn
Am Donnerstag, 12. März 2026, 12:20:17 Mitteleuropäische Normalzeit schrieb Anders Lindh Olsson via Tech-talk:
> Hi Jörn,
>
> You need to either comment out stdlib(’c’) or else provide the conda-forge pinning file. This is explained in the next paragraph from where you were.
>
> Cheers
> A
>
> > On 12 Mar 2026, at 11:56, Jörn Dreyer via Tech-talk <tech-talk at aps.anl.gov> wrote:
> >
> > Hello,
> >
> > I tried to build the example from the E3 website (iocstats) in a environment created with micromamba.
> > The conda build recipe command fails with:
> >
> >> Could not solve for environment specs
> >> The following package could not be installed
> >> └─ c_linux-64 =* * does not exist (perhaps a typo or a missing channel).
> >
> > From googling the error I know that it comes from the requirement { stdlib('c') }in recipe/meta.yaml for the build of the module.
> > Does anybody know what could be wrong in my environment?
> >
> > Regards
> >
> > Jörn
> > <Jörn Dreyer.vcf>
>
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EMAIL;TYPE:j.dreyer at hzdr.de
FN:Jörn Dreyer
N:Dreyer;Jörn;;;
ORG:Helmholtz - Zentrum Dresden- Rossendorf;FWKX
TEL;TYPE=WORK:+0493502603263
TITLE:Dr.
UID:c191707b-eb41-4699-bb8d-a5ef050ab4aa
X-KADDRESSBOOK-MailPreferedFormatting:TEXT
END:VCARD
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