diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 847910d..f413509 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -43,34 +43,34 @@ jobs:
 
       - name: Check Conda Config
         run: |
-          source ~/conda/etc/profile.d/conda.sh
-          conda activate base
-          conda info
-          conda list
-          conda config --show-sources
+          source ~/conda/etc/profile.d/conda.sh &&
+          conda activate base &&
+          conda info &&
+          conda list &&
+          conda config --show-sources &&
           conda config --show
 
       - name: Install
         run: |
-          source ~/conda/etc/profile.d/conda.sh
-          conda activate base
-          pyver=${{ matrix.python }}
-          sed -i -e "s/python=3\.10/python=${pyver}/" ./config/default/packages_conda.txt
-          cat ./config/default/packages_conda.txt
+          source ~/conda/etc/profile.d/conda.sh &&
+          conda activate base &&
+          pyver=${{ matrix.python }} &&
+          sed -i -e "s/python=3\.*/python=${pyver}/" ./config/default/packages_conda.txt &&
+          cat ./config/default/packages_conda.txt &&
           ./soconda.sh -e soconda -v CI
 
       - name: Run Tests
         run: |
-          source ~/conda/etc/profile.d/conda.sh
-          conda activate "soconda_CI"
-          export OMP_NUM_THREADS=2
-          export MPI_DISABLE=1
-          export CI=1
-          python3 -c 'import scipy; import toast'
-          python3 -c 'import toast.tests; toast.tests.run()'
-          git clone --depth=1 --single-branch --branch=master https://github.com/simonsobs/sotodlib.git
-          pushd sotodlib
-          python3 -m unittest
-          popd
-          unset MPI_DISABLE
+          source ~/conda/etc/profile.d/conda.sh &&
+          conda activate "soconda_CI" &&
+          export OMP_NUM_THREADS=2 &&
+          export MPI_DISABLE=1 &&
+          export CI=1 &&
+          python3 -c 'import scipy; import toast; print(toast.__version__)' &&
+          python3 -c 'import toast.tests; toast.tests.run()' &&
+          git clone --depth=1 --single-branch --branch=master https://github.com/simonsobs/sotodlib.git &&
+          pushd sotodlib &&
+          python3 -m unittest &&
+          popd &&
+          unset MPI_DISABLE &&
           unset OMP_NUM_THREADS
diff --git a/deploy/install_nersc_tag.sh b/deploy/install_nersc_tag.sh
index 124664a..39f706a 100755
--- a/deploy/install_nersc_tag.sh
+++ b/deploy/install_nersc_tag.sh
@@ -39,13 +39,13 @@ fi
 # always created.
 
 # Update the persistent git checkout and find the most recent tag
-pushd "${git_dir}" 2>&1 >/dev/null
+pushd "${git_dir}" >/dev/null 2>&1
 git checkout main
 git fetch --tags
 git rebase origin/main
 git remote prune origin
 latest=$(git describe --tags $(git rev-list --tags --max-count=1))
-popd 2>&1 >/dev/null
+popd >/dev/null 2>&1
 
 # See if we already have this tag installed
 found=no
@@ -74,7 +74,7 @@ today=$(date +%Y%m%d)
 log_file="${log_dir}/check_tags_${host}_${now}"
 
 # Create the log file
-echo "Starting at ${now}" 2>&1 > "${log_file}"
+echo "Starting at ${now}" > "${log_file}"
 
 # Get the module file version that will be installed
 mod_ver="${today}_${latest}"
@@ -83,9 +83,9 @@ send_log=no
 annoy="${git_dir}/.already_annoyed"
 remain=$(get_common_free_gb)
 if (( remain < typical )); then
-    echo "Only ${remain} GB are available in /global/common/software/sobs" 2>&1 >> "${log_file}"
-    echo "Installing latest tag requires approximately ${typical} GB" 2>&1 >> "${log_file}"
-    echo "SKIPPING until disk space is cleared." 2>&1 >> "${log_file}"
+    echo "Only ${remain} GB are available in /global/common/software/sobs" >> "${log_file}"
+    echo "Installing latest tag requires approximately ${typical} GB" >> "${log_file}"
+    echo "SKIPPING until disk space is cleared." >> "${log_file}"
     if [ ! -e "${annoy}" ]; then
         send_log=yes
         touch "${annoy}"
@@ -93,16 +93,16 @@ if (( remain < typical )); then
 else
     send_log=yes
     rm -f "${git_dir}/.already_annoyed"
-    echo "Latest tag '${latest}' not found, installing..." 2>&1 >> "${log_file}"
-    echo "Note: ${remain} GB are available in /global/common/software/sobs" 2>&1 >> "${log_file}"
-    echo "Installing latest tag requires approximately ${typical} GB" 2>&1 >> "${log_file}"
+    echo "Latest tag '${latest}' not found, installing..." >> "${log_file}"
+    echo "Note: ${remain} GB are available in /global/common/software/sobs" >> "${log_file}"
+    echo "Installing latest tag requires approximately ${typical} GB" >> "${log_file}"
     install_log=$(eval "${git_dir}/deploy/install_${host}.sh" "${latest}")
     if [ -f "${install_log}" ]; then
         # There were no errors, and the log file was returned
-        cat "${install_log}" 2>&1 >> "${log_file}"
+        cat "${install_log}" >> "${log_file}"
     else
         # The script must have printed out some errors
-        echo "${install_log}" 2>&1 >> "${log_file}"
+        echo "${install_log}" >> "${log_file}"
     fi
 fi
 
@@ -114,7 +114,7 @@ if [ -e "${mod_latest}" ]; then
     rm -f "${mod_dir}/stable.lua" \
     && ln -s "${mod_latest}" "${mod_dir}/stable.lua"
 else
-    echo "ERROR:  module file ${mod_latest} was not created- leaving stable symlink" 2>&1 >> "${log_file}"
+    echo "ERROR:  module file ${mod_latest} was not created- leaving stable symlink" >> "${log_file}" 
 fi
 
 echo "Finished installing tag '${latest}' on host ${NERSC_HOST} at $(date +%Y%m%d-%H%M%S)" >> "${log_file}"
@@ -124,7 +124,7 @@ if [ "${send_log}" = "yes" ]; then
     slack_web_hook=${SLACKBOT_SOCONDA}
 
     if [ "x${slack_web_hook}" = "x" ]; then
-        echo "Environment variable SLACKBOT_SOCONDA not set- skipping notifications" 2>&1 >> "${log_file}"
+        echo "Environment variable SLACKBOT_SOCONDA not set- skipping notifications" >> "${log_file}"
     else
         # Create the JSON payload.
         slackjson="${log_file}_slack.json"
@@ -132,6 +132,6 @@ if [ "${send_log}" = "yes" ]; then
         echo -e "{\"text\":\"soconda install tag (log at \`${log_file}\`):\n\`\`\`$(head -n ${headtail} ${log_file} | sed -e "s|'|\\\'|g")\`\`\`\n(Snip)\n\`\`\`$(tail -n ${headtail} ${log_file} | sed -e "s|'|\\\'|g")\`\`\`\"}" > "${slackjson}"
         # Post it.
         slackerror=$(curl -X POST -H 'Content-type: application/json' --data "$(cat ${slackjson})" ${slack_web_hook})
-        echo "Slack API post  ${slackerror}" 2>&1 >> "${log_file}"
+        echo "Slack API post  ${slackerror}" >> "${log_file}"
     fi
 fi
diff --git a/deploy/install_perlmutter.sh b/deploy/install_perlmutter.sh
index 206690b..d4b56dd 100755
--- a/deploy/install_perlmutter.sh
+++ b/deploy/install_perlmutter.sh
@@ -49,19 +49,19 @@ if [ -d "${clone_dir}" ]; then
     rm -rf "${clone_dir}"
 fi
 
-git clone --depth=1 --single-branch --branch=${version} https://github.com/simonsobs/soconda.git "${clone_dir}" 2>&1 >> "${logfile}"
+git clone --depth=1 --single-branch --branch=${version} https://github.com/simonsobs/soconda.git "${clone_dir}" >> "${logfile}" 2>&1
 
 # Activate the base environment and keep it up to date.
 source "${base_dir}/etc/profile.d/conda.sh"
-conda activate base 2>&1 >> "${logfile}"
-conda update --yes -n base conda conda-build 2>&1 >> "${logfile}"
-conda update --yes --all -n base 2>&1 >> "${logfile}"
+conda activate base >> "${logfile}" 2>&1
+conda update --yes -n base conda conda-build >> "${logfile}" 2>&1
+conda update --yes --all -n base >> "${logfile}" 2>&1
 
 # Build things from the temp directory
 
-pushd "${clone_dir}" 2>&1 >/dev/null
+pushd "${clone_dir}" >/dev/null 2>&1
 mkdir -p "build"
-pushd "build" 2>&1 >/dev/null
+pushd "build" >/dev/null 2>&1
 
 export MPICC="cc"
 
@@ -69,14 +69,14 @@ eval "${clone_dir}/soconda.sh" \
     -c "perlmutter" \
     -e "${env_name}" \
     -v "${env_version}" \
-    -m "${module_dir}" 2>&1 >> "${logfile}"
+    -m "${module_dir}" >> "${logfile}" 2>&1
 
-popd 2>&1 >/dev/null
-popd 2>&1 >/dev/null
+popd >/dev/null 2>&1
+popd >/dev/null 2>&1
 
 # Update permissions
-chmod -R g-w,g+rX "${env_name}_${env_version}" 2>&1 >> "${logfile}"
-chmod -R g-w,g+rX "${module_dir}/soconda" 2>&1 >> "${logfile}"
+chmod -R g-w,g+rX "${env_name}_${env_version}" >> "${logfile}" 2>&1
+chmod -R g-w,g+rX "${module_dir}/soconda" >> "${logfile}" 2>&1
 
 # Return name of log file
 echo "${logfile}"
diff --git a/pkgs/libactpol/meta.yaml b/pkgs/libactpol/meta.yaml
index b27974c..151e104 100644
--- a/pkgs/libactpol/meta.yaml
+++ b/pkgs/libactpol/meta.yaml
@@ -20,12 +20,12 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - automake
     - autoconf
@@ -42,11 +42,12 @@ requirements:
     # https://github.com/conda-forge/perl-feedstock/issues/56
     - libxcrypt1   # [linux]
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
     - {{ pin_compatible('libactpol_deps') }}
     - {{ pin_compatible('cfitsio') }}
     - {{ pin_compatible('wcslib') }}
diff --git a/pkgs/libactpol_deps/meta.yaml b/pkgs/libactpol_deps/meta.yaml
index 423474b..b2bf5fb 100644
--- a/pkgs/libactpol_deps/meta.yaml
+++ b/pkgs/libactpol_deps/meta.yaml
@@ -21,12 +21,12 @@ requirements:
   build:
     - {{ compiler('c') }}
     - {{ compiler('fortran') }}
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - automake
     - autoconf
@@ -35,11 +35,12 @@ requirements:
     - make
     - zziplib
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
     - {{ pin_compatible('zziplib') }}
 
 test:
diff --git a/pkgs/moby2/meta.yaml b/pkgs/moby2/meta.yaml
index b900ced..3c6b552 100644
--- a/pkgs/moby2/meta.yaml
+++ b/pkgs/moby2/meta.yaml
@@ -21,12 +21,12 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
     - fftw
@@ -34,22 +34,24 @@ requirements:
     - libactpol
     - future
     - numpy=1.26.*
+    - scipy
     # Although not a dependency, we put numba here to force
     # building with a numba-compatible numpy version
     - numba
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
+    - {{ pin_compatible('scipy') }}
+    - {{ pin_compatible('numpy') }}
     - {{ pin_compatible('fftw') }}
     - {{ pin_compatible('gsl') }}
     - {{ pin_compatible('libactpol') }}
-    - {{ pin_compatible('numpy') }}
     - future
-    - scipy
     - matplotlib
     - astropy
     - ephem
diff --git a/pkgs/pixell/meta.yaml b/pkgs/pixell/meta.yaml
index a5dd6f5..96a4491 100644
--- a/pkgs/pixell/meta.yaml
+++ b/pkgs/pixell/meta.yaml
@@ -20,12 +20,12 @@ requirements:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
     - {{ compiler('fortran') }}
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - automake
     - autoconf
@@ -46,14 +46,15 @@ requirements:
     # https://github.com/conda-forge/perl-feedstock/issues/56
     - libxcrypt1   # [linux]
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
+    - {{ pin_compatible('scipy') }}
     - {{ pin_compatible('numpy') }}
-    - scipy
     - astropy
     - healpy
     - matplotlib
diff --git a/pkgs/qpoint/meta.yaml b/pkgs/qpoint/meta.yaml
index 12c77f6..23d6097 100644
--- a/pkgs/qpoint/meta.yaml
+++ b/pkgs/qpoint/meta.yaml
@@ -20,12 +20,17 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
+    - openblas * openmp_*
+    - liblapack * *openblas
     - python
     - setuptools
     - numpy=1.26.*
+    - scipy
     # Although not a dependency, we put numba here to force
     # building with a numba-compatible numpy version
     - numba
@@ -33,7 +38,14 @@ requirements:
     # IERS data and store it in the package
     - astropy
   run:
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
+    - openblas * openmp_*
+    - liblapack * *openblas
     - python
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
+    - {{ pin_compatible('scipy') }}
     - {{ pin_compatible('numpy') }}
 
 test:
diff --git a/pkgs/so3g/meta.yaml b/pkgs/so3g/meta.yaml
index b159de9..1c486a3 100644
--- a/pkgs/so3g/meta.yaml
+++ b/pkgs/so3g/meta.yaml
@@ -27,12 +27,12 @@ requirements:
     - {{ compiler('cxx') }}
     - cmake
     - make         # [unix]
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
     - numpy=1.26.*
@@ -46,12 +46,14 @@ requirements:
     # building with a numba-compatible numpy version
     - numba
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
+    - {{ pin_compatible('scipy') }}
     - {{ pin_compatible('numpy') }}
     - {{ pin_compatible('libboost') }}
     - {{ pin_compatible('libboost-python') }}
@@ -59,7 +61,6 @@ requirements:
     - {{ pin_compatible('qpoint') }}
     - astropy
     - matplotlib
-    - scipy
     - ephem
     - pytz
     - pyaml
diff --git a/pkgs/toast/meta.yaml b/pkgs/toast/meta.yaml
index 46b192b..e50f553 100644
--- a/pkgs/toast/meta.yaml
+++ b/pkgs/toast/meta.yaml
@@ -25,34 +25,36 @@ requirements:
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
     - cmake
-    - make         # [unix]
-    - llvm-openmp # [osx or linux]
+    - make
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
   host:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
     - numpy=1.26.*
+    - scipy
     - fftw
     - suitesparse
     - libaatm
     - libflac
   run:
-    - llvm-openmp # [osx or linux]
+    - llvm-openmp
+    - _openmp_mutex * *_llvm
     - openblas * openmp_*
-    - libopenblas * openmp_*
-    - libblas * *openblas
     - liblapack * *openblas
     - python
+    - {{ pin_compatible('openblas') }}
+    - {{ pin_compatible('liblapack') }}
+    - {{ pin_compatible('scipy') }}
     - {{ pin_compatible('numpy') }}
     - {{ pin_compatible('fftw') }}
     - {{ pin_compatible('suitesparse') }}
     - {{ pin_compatible('libaatm') }}
     - {{ pin_compatible('libflac') }}
     - ruamel.yaml
-    - scipy
     - matplotlib
     - astropy
     - healpy
diff --git a/soconda.sh b/soconda.sh
index 8e9a224..b674728 100755
--- a/soconda.sh
+++ b/soconda.sh
@@ -170,9 +170,19 @@ if [ -z "${env_check}" ]; then
     echo "Activating environment \"${fullenv}\""
     conda_exec activate "${fullenv}"
 
-    # Create condarc for this environment
+    # Create condarc for this environment.  Note: The conda build
+    # tools are installed in the base environment and so the
+    # "--use-local" option will not let us find the built packages
+    # we will store inside this env.  Because of this, we create a
+    # package directory in our environment and add it to the
+    # condarc.
+    mkdir -p "${CONDA_PREFIX}/conda-bld"
+    mkdir -p "${CONDA_PREFIX}/conda-bld/temp_build"
+    conda_exec index "${CONDA_PREFIX}/conda-bld"
+
     echo "# condarc for soconda" > "${CONDA_PREFIX}/.condarc"
     echo "channels:" >> "${CONDA_PREFIX}/.condarc"
+    echo "  - file://${CONDA_PREFIX}/conda-bld" >> "${CONDA_PREFIX}/.condarc"
     echo "  - conda-forge" >> "${CONDA_PREFIX}/.condarc"
     echo "  - nodefaults" >> "${CONDA_PREFIX}/.condarc"
     echo "changeps1: true" >> "${CONDA_PREFIX}/.condarc"
@@ -195,12 +205,10 @@ conda_exec env list
 # Install conda packages.
 echo -e "\n\n"
 echo "Installing conda packages..." | tee "log_conda"
-conda_exec install --yes --file "${scriptdir}/config/common.txt" \
-    2>&1 | tee -a "log_conda"
-conda_exec install --yes --file "${confdir}/packages_conda.txt" \
+conda_exec install --yes \
+    --file "${scriptdir}/config/common.txt" \
+    --file "${confdir}/packages_conda.txt" \
     2>&1 | tee -a "log_conda"
-# The "cc" symlink from the compilers package shadows Cray's MPI C compiler...
-rm -f "${CONDA_PREFIX}/bin/cc"
 
 conda_exec deactivate
 conda_exec activate "${fullenv}"
@@ -239,17 +247,19 @@ while IFS='' read -r line || [[ -n "${line}" ]]; do
         pkgrecipe="${scriptdir}/pkgs/${pkgname}"
         echo -e "\n\n"
         echo "Building local package '${pkgname}'" 2>&1 | tee "log_${pkgname}"
-        conda build ${pkgrecipe} 2>&1 | tee -a "log_${pkgname}"
+        conda build --croot "${CONDA_PREFIX}/conda-bld/temp_build" \
+            --output-folder "${CONDA_PREFIX}/conda-bld" \
+            ${pkgrecipe} 2>&1 | tee -a "log_${pkgname}"
         echo "Installing local package '${pkgname}'" 2>&1 | tee -a "log_${pkgname}"
-        conda install --yes --use-local ${pkgname} 2>&1 | tee -a "log_${pkgname}"
+        conda install --yes ${pkgname} 2>&1 | tee -a "log_${pkgname}"
     fi
 done < "${confdir}/packages_local.txt"
 
 echo -e "\n\n"
 echo "Cleaning up build products"
-conda build purge
+rm -rf "${CONDA_PREFIX}/conda-bld/temp_build"
 
-# Remove buid directory
+# Remove build directory
 rm -rf "${conda_tmp}" &> /dev/null
 
 # Remove /tmp/pixell-* test files create by pixell/setup.py