diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d5f2951..a3e1de4 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,6 @@ on:
 
 jobs:
   test:
-
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -118,10 +117,30 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: 3.12
-    - name: Install dependencies
+    - name: Ensure build environment
+      shell: powershell
       run: |
-        C:\Miniconda\condabin\conda.bat env update --file conda_windows.yml --name base
-        C:\Miniconda\condabin\conda.bat init powershell
+        $envName="eos_build"
+        $envFile="conda_windows.yml"
+        $hashFile="$env:TEMP\$envName.hash"
+
+        $newHash = (Get-FileHash $envFile).Hash
+
+        if (!(Test-Path $hashFile)) {
+            $rebuild = $true
+        } else {
+            $oldHash = Get-Content $hashFile
+            $rebuild = $oldHash -ne $newHash
+        }
+
+        if ($rebuild) {
+            Write-Host "Environment changed → rebuilding"
+            micromamba env remove -n $envName -y 2>$null
+            micromamba create -n $envName -f $envFile -y
+            $newHash | Out-File $hashFile
+        } else {
+            Write-Host "Environment unchanged → using cached env"
+        }
     - name: Build with pyinstaller
       run: |
         pyinstaller windows_build.spec
diff --git a/conda_windows.yml b/conda_windows.yml
index 9fd9d82..81703d8 100644
--- a/conda_windows.yml
+++ b/conda_windows.yml
@@ -1,44 +1,68 @@
 name: eos_build
 channels:
-  - defaults
+  - conda-forge
 dependencies:
-  - altgraph=0.17.3=py312haa95532_0
-  - blas=1.0=mkl
-  - bzip2=1.0.8=h2bbff1b_6
-  - ca-certificates=2024.11.26=haa95532_0
-  - expat=2.6.3=h5da7b33_0
-  - h5py=3.12.1=py312h3b2c811_0
-  - hdf5=1.12.1=h51c971a_3
-  - icc_rt=2022.1.0=h6049295_2
-  - intel-openmp=2023.1.0=h59b6b97_46320
-  - libffi=3.4.4=hd77b12b_1
-  - llvmlite=0.43.0=py312hf2fb9eb_0
-  - mkl=2023.1.0=h6b88ed4_46358
-  - mkl-service=2.4.0=py312h2bbff1b_1
-  - mkl_fft=1.3.11=py312h827c3e9_0
-  - mkl_random=1.2.8=py312h0158946_0
-  - numba=0.60.0=py312h0158946_0
-  - numpy=1.26.4=py312hfd52020_0
-  - numpy-base=1.26.4=py312h4dde369_0
-  - openssl=3.0.15=h827c3e9_0
-  - packaging=24.1=py312haa95532_0
-  - pefile=2023.2.7=py312haa95532_0
-  - pip=24.2=py312haa95532_0
-  - pyinstaller=6.9.0=py312h0416ee5_0
-  - pyinstaller-hooks-contrib=2024.7=py312haa95532_0
-  - python=3.12.7=h14ffc60_0
-  - pywin32-ctypes=0.2.2=py312haa95532_0
-  - setuptools=75.1.0=py312haa95532_0
-  - sqlite=3.45.3=h2bbff1b_0
-  - tbb=2021.8.0=h59b6b97_0
-  - tk=8.6.14=h0416ee5_0
-  - tzdata=2024b=h04d1e81_0
-  - vc=14.40=h2eaa2aa_1
-  - vs2015_runtime=14.40.33807=h98bb1dd_1
-  - wheel=0.44.0=py312haa95532_0
-  - xz=5.4.6=h8cc25b3_1
-  - zlib=1.2.13=h8cc25b3_1
+  - altgraph=0.17.5=pyhd8ed1ab_0
+  - bzip2=1.0.8=h0ad9c76_9
+  - ca-certificates=2026.2.25=h4c7d964_0
+  - cached-property=1.5.2=hd8ed1ab_1
+  - cached_property=1.5.2=pyha770c72_1
+  - flexcache=0.3=pyhd8ed1ab_1
+  - flexparser=0.4=pyhd8ed1ab_1
+  - future=1.0.0=pyhd8ed1ab_2
+  - h5py=3.15.1=nompi_py312h03cd2ba_101
+  - hdf5=1.14.6=nompi_hae35d4c_106
+  - icu=78.2=h637d24d_0
+  - importlib-metadata=8.7.0=pyhe01879c_1
+  - krb5=1.22.2=h0ea6238_0
+  - libaec=1.1.5=haf901d7_0
+  - libblas=3.11.0=5_hf2e6a31_mkl
+  - libcblas=3.11.0=5_h2a3cdd5_mkl
+  - libcurl=8.19.0=h8206538_0
+  - libexpat=2.7.4=hac47afa_0
+  - libffi=3.5.2=h3d046cb_0
+  - libhwloc=2.12.2=default_h4379cf1_1000
+  - libiconv=1.18=hc1393d2_2
+  - liblapack=3.11.0=5_hf9ab0e9_mkl
+  - liblzma=5.8.2=hfd05255_0
+  - libsqlite=3.52.0=hf5d6505_0
+  - libssh2=1.11.1=h9aa295b_0
+  - libwinpthread=12.0.0.r4.gg4f2fc60ca=h57928b3_10
+  - libxml2=2.15.2=h779ef1b_0
+  - libxml2-16=2.15.2=h3cfd58e_0
+  - libzlib=1.3.1=h2466b09_2
+  - llvm-openmp=22.1.0=h4fa8253_0
+  - llvmlite=0.46.0=py312hdb9728c_0
+  - mkl=2025.3.0=hac47afa_455
+  - numba=0.64.0=py312h560f1c9_0
+  - numpy=2.4.2=py312ha72d056_1
+  - openssl=3.6.1=hf411b9b_1
+  - packaging=26.0=pyhcf101f3_0
+  - pefile=2023.2.7=pyhd8ed1ab_0
+  - pint=0.25.2=pyhcf101f3_0
+  - pip=26.0.1=pyh8b19718_0
+  - platformdirs=4.9.4=pyhcf101f3_0
+  - pyinstaller=6.19.0=py312hf4647a0_1
+  - pyinstaller-hooks-contrib=2026.2=pyhd8ed1ab_0
+  - python=3.12.13=h0159041_0_cpython
+  - python_abi=3.12=8_cp312
+  - pywin32=311=py312h829343e_1
+  - pywin32-ctypes=0.2.3=py312h2e8e312_3
+  - pyyaml=6.0.3=py312h05f76fc_1
+  - setuptools=82.0.1=pyh332efcf_0
+  - tabulate=0.10.0=pyhcf101f3_0
+  - tbb=2022.3.0=h3155e25_2
+  - tk=8.6.13=h6ed50ae_3
+  - typing-extensions=4.15.0=h396c80c_0
+  - typing_extensions=4.15.0=pyhcf101f3_0
+  - ucrt=10.0.26100.0=h57928b3_0
+  - vc=14.3=h41ae7f8_34
+  - vc14_runtime=14.44.35208=h818238b_34
+  - vcomp14=14.44.35208=h818238b_34
+  - wheel=0.46.3=pyhd8ed1ab_0
+  - yaml=0.2.5=h6a83c73_3
+  - zipp=3.23.0=pyhcf101f3_1
+  - zstd=1.5.7=h534d264_6
   - pip:
-      - orsopy==1.2.1
-      - pyyaml==6.0.2
-      - tzdata
\ No newline at end of file
+      - orsopy==1.2.2
+      - tzdata
diff --git a/windows_build.spec b/windows_build.spec
index 4ca0124..a7d95a1 100644
--- a/windows_build.spec
+++ b/windows_build.spec
@@ -40,10 +40,47 @@ exe = EXE(
     codesign_identity=None,
     entitlements_file=None,
 )
+
+a2 = Analysis(
+    ['eos/ls.py'],
+    pathex=[],
+    binaries=[],
+    datas=[],
+    hiddenimports=[],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    noarchive=False,
+    optimize=1,
+)
+pyz2 = PYZ(a2.pure)
+
+exe2 = EXE(
+    pyz2,
+    a2.scripts,
+    [],
+    exclude_binaries=True,
+    name='eosls',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    console=True,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
+
 coll = COLLECT(
     exe,
     a.binaries,
     a.datas,
+    exe2,
+    a2.binaries,
+    a2.datas,
     strip=False,
     upx=True,
     upx_exclude=[],