Toolchain: remove some legacy mentions

INSTALL.md

@@ -10,6 +10,8 @@ For more details on downloading CP2K, see <https://www.cp2k.org/download>.
 
 ## 2. Install prerequisites
 
+### Method 1: Spack
+
 The easiest way to build CP2K with all its dependencies is via the `make_cp2k.sh` script, which
 builds CP2K using Spack and CMake locally within the CP2K_ROOT folder.
 
@@ -28,6 +30,8 @@ or run in a subshell with:
 Note: it is recommended to install podman to take advantage of a spack cache. This will accelerate
 the build of the CP2K dependencies with Spack significantly.
 
+### Method 2: Toolchain
+
 Alternatively, the [toolchain script](./tools/toolchain/install_cp2k_toolchain.sh) can also be run
 directly.
 
@@ -50,14 +54,14 @@ a range of devices). If you wish to build with GPU support, please see the
 
 ```shell
 ./install_cp2k_toolchain.sh --with-libxsmm=install --with-openblas=system \
-     --with-fftw=system --with-reflapack=no  --enable-cuda
+     --with-fftw=system  --enable-cuda
 ```
 
 - For AMD/ROCm/HIP support, use:
 
 ```shell
 ./install_cp2k_toolchain.sh --with-libxsmm=install --with-openblas=system \
-     --with-fftw=system --with-reflapack=no  --enable-hip
+     --with-fftw=system  --enable-hip
 ```
 
 ## 3. Compile

tools/toolchain/README.md

@@ -114,7 +114,6 @@ proprietary software packages, like e.g. MKL, these have to be installed separat
 | openblas  | [BSD 3-Clause](https://github.com/xianyi/OpenBLAS/blob/develop/LICENSE)            | Yes                                                                              |
 | openmpi   | [BSD 3-Clause](https://github.com/open-mpi/ompi/blob/master/LICENSE)               | Yes                                                                              |
 | plumed    | [LGPL](https://github.com/plumed/plumed2/blob/master/COPYING.LESSER)               | Yes                                                                              |
-| reflapack | [BSD 3-Clause](http://www.netlib.org/lapack/LICENSE.txt)                           | Yes                                                                              |
 | scalapack | [BSD 3-Clause](http://www.netlib.org/scalapack/LICENSE)                            | Yes                                                                              |
 | sirius    | [BSD 2-Clause](https://github.com/electronic-structure/SIRIUS/blob/master/LICENSE) | Yes                                                                              |
 | spfft     | [BSD 3-Clause](https://github.com/eth-cscs/SpFFT/blob/master/LICENSE)              | Yes                                                                              |
@@ -153,13 +152,6 @@ proprietary software packages, like e.g. MKL, these have to be installed separat
   Nested structures will be parsed correctly. See
   [`IF_XYZ` constructs](./README_FOR_DEVELOPERS.md#the-if_xyz-constructs) below.
 
-- `checksums.sha256` contains the pre-calculated SHA256 checksums for the tar balls of all of the
-  packages. This is used by the `download_pkg` macro in `script/toolkit.sh`.
-
-- `arch_base.tmpl` contains the template skeleton structure for the arch files. The
-  `install_cp2k_toolchain` script will set all the variables used in the template file, and then do
-  an eval to expand all of `${VARIABLE}` items in `arch_base.tmpl` to give the cp2k arch files.
-
 ### `enable-FEATURE` options
 
 The `enable-FEATURE` options control whether a FEATURE is enabled or disabled. Possible values are:

tools/toolchain/install_cp2k_toolchain.sh

@@ -32,7 +32,6 @@ export SCRIPTDIR="${ROOTDIR}/scripts"
 export BUILDDIR="${ROOTDIR}/build"
 export INSTALLDIR="${ROOTDIR}/install"
 export SETUPFILE="${INSTALLDIR}/setup"
-export SHA256_CHECKSUM="${SCRIPTDIR}/checksums.sha256"
 
 # ------------------------------------------------------------------------
 # Make a copy of all options for $SETUPFILE