Unable to load any of the alternatives:
   ("libSDL2-2.0.so.0" "libSDL2.so.0.2" "libSDL2")
   [Condition of type CFFI:LOAD-FOREIGN-LIBRARY-ERROR]

Restarts:
 0: [RETRY] Try loading the foreign library again.
 1: [USE-VALUE] Use another library instead.
 2: [TRY-RECOMPILING] Recompile library and try loading it again
 3: [RETRY] Retry loading FASL for #<CL-SOURCE-FILE "sdl2" "library">.
 4: [ACCEPT] Continue, treating loading FASL for #<CL-SOURCE-FILE "sdl2" "library"> as having been successful.
 5: [RETRY] Retry ASDF operation.
 --more--

Backtrace:
  0: (CFFI::FL-ERROR "Unable to load any of the alternatives:~%   ~S" ("libSDL2-2.0.so.0" "libSDL2.so.0.2" "libSDL2"))
  1: (CFFI::TRY-FOREIGN-LIBRARY-ALTERNATIVES LIBSDL2 ("libSDL2-2.0.so.0" "libSDL2.so.0.2" "libSDL2") NIL)
  2: ((FLET CFFI::%DO-LOAD :IN CFFI::%DO-LOAD-FOREIGN-LIBRARY) #<CFFI:FOREIGN-LIBRARY LIBSDL2> LIBSDL2 (:OR "libSDL2-2.0.so.0" "libSDL2.so.0.2" "libSDL2"))
  3: (CFFI:LOAD-FOREIGN-LIBRARY LIBSDL2 :SEARCH-PATH NIL)
  4: (SB-FASL::LOAD-FASL-GROUP #S(SB-FASL::FASL-INPUT :STREAM #<SB-SYS:FD-STREAM for "file /home/blob/.cache/common-lisp/sbcl-1.4.4.nixos-linux-x64/home/blob/quicklisp/dists/quicklisp/software/cl-sdl2-2017..
  5: (SB-FASL::LOAD-AS-FASL #<SB-SYS:FD-STREAM for "file /home/blob/.cache/common-lisp/sbcl-1.4.4.nixos-linux-x64/home/blob/quicklisp/dists/quicklisp/software/cl-sdl2-20171130-git/src/library.fasl" {10020E..
  6: ((FLET SB-FASL::THUNK :IN LOAD))
  7: (SB-FASL::CALL-WITH-LOAD-BINDINGS #<CLOSURE (FLET SB-FASL::THUNK :IN LOAD) {7FFFEE53C70B}> #<SB-SYS:FD-STREAM for "file /home/blob/.cache/common-lisp/sbcl-1.4.4.nixos-linux-x64/home/blob/quicklisp/dis..
  8: ((FLET SB-FASL::LOAD-STREAM :IN LOAD) #<SB-SYS:FD-STREAM for "file /home/blob/.cache/common-lisp/sbcl-1.4.4.nixos-linux-x64/home/blob/quicklisp/dists/quicklisp/software/cl-sdl2-20171130-git/src/librar..
  9: (LOAD #P"/home/blob/.cache/common-lisp/sbcl-1.4.4.nixos-linux-x64/home/blob/quicklisp/dists/quicklisp/software/cl-sdl2-20171130-git/src/library.fasl" :VERBOSE NIL :PRINT NIL :IF-DOES-NOT-EXIST T :EXTE..
 10: (UIOP/UTILITY:CALL-WITH-MUFFLED-CONDITIONS #<CLOSURE (LAMBDA NIL :IN UIOP/LISP-BUILD:LOAD*) {10020EAE7B}> ("Overwriting already existing readtable ~S." #(#:FINALIZERS-OFF-WARNING :ASDF-FINALIZERS)))
 11: ((SB-PCL::EMF ASDF/ACTION:PERFORM) #<unused argument> #<unused argument> #<ASDF/LISP-ACTION:LOAD-OP > #<ASDF/LISP-ACTION:CL-SOURCE-FILE "sdl2" "library">)
 12: ((LAMBDA NIL :IN ASDF/ACTION:CALL-WHILE-VISITING-ACTION))
 13: ((:METHOD ASDF/ACTION:PERFORM-WITH-RESTARTS (ASDF/LISP-ACTION:LOAD-OP ASDF/LISP-ACTION:CL-SOURCE-FILE)) #<ASDF/LISP-ACTION:LOAD-OP > #<ASDF/LISP-ACTION:CL-SOURCE-FILE "sdl2" "library">) [fast-method]
 14: ((:METHOD ASDF/ACTION:PERFORM-WITH-RESTARTS :AROUND (T T)) #<ASDF/LISP-ACTION:LOAD-OP > #<ASDF/LISP-ACTION:CL-SOURCE-FILE "sdl2" "library">) [fast-method]
 15: ((:METHOD ASDF/PLAN:PERFORM-PLAN (T)) #<ASDF/PLAN:SEQUENTIAL-PLAN {1007167AB3}>) [fast-method]
 16: ((FLET SB-C::WITH-IT :IN SB-C::%WITH-COMPILATION-UNIT))
 17: ((:METHOD ASDF/PLAN:PERFORM-PLAN :AROUND (T)) #<ASDF/PLAN:SEQUENTIAL-PLAN {1007167AB3}>) [fast-method]
 18: ((:METHOD ASDF/OPERATE:OPERATE (ASDF/OPERATION:OPERATION ASDF/COMPONENT:COMPONENT)) #<ASDF/LISP-ACTION:LOAD-OP > #<ASDF/SYSTEM:SYSTEM "cepl.sdl2"> :PLAN-CLASS NIL :PLAN-OPTIONS NIL) [fast-method]
 19: ((SB-PCL::EMF ASDF/OPERATE:OPERATE) #<unused argument> #<unused argument> #<ASDF/LISP-ACTION:LOAD-OP > #<ASDF/SYSTEM:SYSTEM "cepl.sdl2"> :VERBOSE NIL)
 --more--