sbcl: Small fixes around the phase definitions

- Remove some debugging output at the start of the `patchPhase` section,
  which appears to have outlived its value.
- Rename `patchPhase` to `postPatch`, to avoid preventing people adding
  patches via the `patches` variable.
- Add `preBuild` and `postBuild` run-hooks to the `buildPhase` section.
- Add `preInstall` and `postInstall` run-hooks to the `installPhase`
  section.

pkgs/development/compilers/sbcl/common.nix

@@ -22,11 +22,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [texinfo];
 
-  patchPhase = ''
-    echo '"${version}.nixos"' > version.lisp-expr
-
-    pwd
-
+  postPatch = ''
     # SBCL checks whether files are up-to-date in many places..
     # Unfortunately, same timestamp is not good enough
     sed -e 's@> x y@>= x y@' -i contrib/sb-aclrepl/repl.lisp
@@ -81,16 +77,24 @@ stdenv.mkDerivation rec {
     optionals disableImmobileSpace [ "immobile-space" "immobile-code" "compact-instance-header" ];
 
   buildPhase = ''
+    runHook preBuild
+
     sh make.sh --prefix=$out --xc-host="${sbclBootstrapHost}" ${
                   lib.concatStringsSep " "
                     (builtins.map (x: "--with-${x}") enableFeatures ++
                      builtins.map (x: "--without-${x}") disableFeatures)
                 }
     (cd doc/manual ; make info)
+
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
+
     INSTALL_ROOT=$out sh install.sh
+
+    runHook postInstall
   ''
   + lib.optionalString (!purgeNixReferences) ''
     cp -r src $out/lib/sbcl