Fix package installation issue for lisi package for macOS

[mengxu98]

When installing the lisi package using pak::pak on Macbook (Apple Silicon M3), the following error occurs due to missing libraries (Devtools::install_github prompts the same error):

pak::pak('immunogenomics/lisi')
✔ Loading metadata database ... done

→ Will update 1 package.
→ The package (0 B) is cached.

• lisi 1.0 → 1.0 👷🏿‍♀️🔧 (GitHub: a917556)
  ? Do you want to continue (Y/n) y
  ℹ No downloads are needed, 1 pkg is cached
  ℹ Building lisi 1.0
  ✖ Failed to build lisi 1.0 (2.7s)
  Error:
  ! error in pak subprocess
  Caused by error in stop_task_build(state, worker):
  ! Failed to build source package lisi.
  Full installation output:

• installing source package ‘lisi’ ...
  ** this is package ‘lisi’ version ‘1.0’
  staged installation is only possible with locking
  ** using non-staged installation
  ** libs
  using C++ compiler: ‘Apple clang version 17.0.0 (clang-1700.0.13.3)’
  using C++11
  using SDK: ‘’
  clang++ -arch arm64 -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I'/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/Rcpp/include' -I'/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/RcppArmadillo/include' -I/opt/R/arm64/include -fPIC -falign-functions=64 -Wall -g -O2 -Wall -pedantic -fdiagnostics-color=always -c RcppExports.cpp -o RcppExports.o
  clang++ -arch arm64 -std=gnu++11 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I'/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/Rcpp/include' -I'/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/RcppArmadillo/include' -I/opt/R/arm64/include -fPIC -falign-functions=64 -Wall -g -O2 -Wall -pedantic -fdiagnostics-color=always -c utils.cpp -o utils.o
  clang++ -arch arm64 -std=gnu++11 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -L/Library/Frameworks/R.framework/Resources/lib -L/opt/R/arm64/lib -o lisi.so RcppExports.o utils.o -L/Library/Frameworks/R.framework/Resources/lib -lRlapack -L/Library/Frameworks/R.framework/Resources/lib -lRblas -L/opt/gfortran/lib/gcc/aarch64-apple-darwin20.0/14.2.0 -L/opt/gfortran/lib -lemutls_w -lheapt_w -lgfortran -lquadmath -F/Library/Frameworks/R.framework/.. -framework R
  ld: warning: search path '/opt/gfortran/lib/gcc/aarch64-apple-darwin20.0/14.2.0' not found
  ld: library 'emutls_w' not found
  clang++: error: linker command failed with exit code 1 (use -v to see invocation)
  make: *** [lisi.so] Error 1
  ERROR: compilation failed for package ‘lisi’
• removing ‘/private/var/folders/rv/3jnfbs0d6r7d0c5bfj7ft5k00000gn/T/RtmpsDMvkh/pkg-lib5df16f54a7a5/lisi’
  Type .Last.error to see the more details.

To fix this issue, I commented out the line PKG_LIBS = $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) in the Makevars file.
With this modification, the lisi package installs successfully on Apple Silicon:

pak::pak('mengxu98/lisi')

ℹ No downloads are needed
✔ 1 pkg + 2 deps: kept 3 [1.6s]

library(lisi)