Re: E3 conda build problem

[Simon Rose via Tech-talk <tech-talk at aps.anl.gov>]

Hi Jörn -

I note that the prefix you have is exactly 256 characters before it reaches the snippet name which is very suspicious. Where are you seeing that in the log? Can you please send a full log of your build and test run?

Cheers,

Simon Rose
ESS



On 2026-03-12, 14:18, "Tech-talk on behalf of Jörn Dreyer via Tech-talk" <tech-talk-bounces at aps.anl.gov <mailto:tech-talk-bounces at aps.anl.gov> on behalf of tech-talk at aps.anl.gov <mailto:tech-talk at aps.anl.gov>> wrote:


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 <mailto: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>
>