csh: don't require SPACK_ROOT for sourcing setup-env.csh (#18225)

Don't require SPACK_ROOT for sourcing setup-env.csh and make output more consistent

.github/workflows/linux_unit_tests.yaml

@@ -26,9 +26,12 @@ jobs:
     - name: Install System packages
       run: |
           sudo apt-get -y update
-          sudo apt-get install -y coreutils gfortran graphviz gnupg2 mercurial ninja-build patchelf
+          # Needed for unit tests
+          sudo apt-get install -y coreutils gfortran graphviz gnupg2 mercurial
+          sudo apt-get install -y ninja-build patchelf
           # Needed for kcov
-          sudo apt-get -y install cmake binutils-dev libcurl4-openssl-dev zlib1g-dev libdw-dev libiberty-dev
+          sudo apt-get -y install cmake binutils-dev libcurl4-openssl-dev
+          sudo apt-get -y install zlib1g-dev libdw-dev libiberty-dev
     - name: Install Python packages
       run: |
           pip install --upgrade pip six setuptools codecov coverage
@@ -69,9 +72,11 @@ jobs:
     - name: Install System packages
       run: |
           sudo apt-get -y update
-          sudo apt-get install -y coreutils gfortran gnupg2 mercurial ninja-build patchelf zsh fish
+          # Needed for shell tests
+          sudo apt-get install -y coreutils csh zsh tcsh fish dash bash
           # Needed for kcov
-          sudo apt-get -y install cmake binutils-dev libcurl4-openssl-dev zlib1g-dev libdw-dev libiberty-dev
+          sudo apt-get -y install cmake binutils-dev libcurl4-openssl-dev
+          sudo apt-get -y install zlib1g-dev libdw-dev libiberty-dev
     - name: Install Python packages
       run: |
           pip install --upgrade pip six setuptools codecov coverage

.github/workflows/macos_unit_tests.yaml

@@ -26,7 +26,7 @@ jobs:
           pip install --upgrade flake8 pep8-naming
     - name: Setup Homebrew packages
       run: |
-        brew install gcc gnupg2 dash kcov
+        brew install dash fish gcc gnupg2 kcov
     - name: Run unit tests
       run: |
         git --version