removed libexpat from dependency list (#1680)

Co-authored-by: Dhanya Thattil <dhanya.thattil@psi.ch>

README.md

@@ -265,20 +265,13 @@ conda create -n myenv slsdetgui=7.0.0
 conda activate myenv
 ```
 
-2. Using system installation on RHEL7
+2. Using system installation on RHEL7/RHEL8
 ```
 yum install qt5-qtbase-devel.x86_64
-yum install qt5-qtsvg-devel.x86_64 
+yum install qt5-qtsvg-devel.x86_64
 ```
 
-3. Using system installation on RHEL8
-```
-yum install qt5-qtbase-devel.x86_64
-yum install qt5-qtsvg-devel.x86_64 
-yum install expat-devel.x86_64
-```
-
-4. Using conda
+3. Using conda
 ```
 #Add channels for dependencies and our library
 conda config --add channels conda-forge

conda-recipes/main-library/meta.yaml

@@ -28,7 +28,6 @@ requirements:
     - libgl-devel  # [linux]
     - libtiff
     - zlib
-    - expat
     - zeromq
     - fmt
   

docs/src/installation.rst

@@ -322,22 +322,14 @@ using this compiler
         conda activate myenv
 
 
-2. Using system installation on RHEL7
+2. Using system installation on RHEL7/RHEL8
 
     .. code-block:: bash
 
         yum install qt5-qtbase-devel.x86_64
-        yum install qt5-qtsvg-devel.x86_64 
+        yum install qt5-qtsvg-devel.x86_64
 
-3. Using system installation on RHEL8
-
-    .. code-block:: bash
-
-        yum install qt5-qtbase-devel.x86_64
-        yum install qt5-qtsvg-devel.x86_64 
-        yum install expat-devel.x86_64
-
-4. Using conda
+3. Using conda
 
     .. code-block:: bash
 

slsDetectorGui/CMakeLists.txt

@@ -102,7 +102,6 @@ target_link_libraries(slsDetectorGui PUBLIC
     Qt5::Widgets
     Qt5::Gui
     Qt5::Core
-    expat
     
     PRIVATE
     slsProjectWarnings