branch wip-build-systems-gexp created (now b1da83b)

[guix-commits]

civodul pushed a change to branch wip-build-systems-gexp
in repository guix.

      at b1da83b  build-system: Use 'input-tuples->gexp' and 'outputs->gexp'.

This branch includes the following new commits:

     new c5690c3  build-system: Rewrite using gexps.
     new ea7d584  packages: Turn 'bag->derivation' into a monadic procedure.
     new 044d150  packages: Simplify patch instantiation.
     new aeee2e8  packages: Core procedures are written in monadic style.
     new 670f8bf  gexp: Micro-optimize sexp serialization.
     new 8b43dbd  gexp: 'gexp-inputs' returns a list of <gexp-input> records.
     new a66101d  gexp: 'gexp-inputs' returns both native and non-native inputs.
     new fb28b64  gexp: Keep 'lower-inputs' private.
     new 4776b06  gexp: Micro-optimize 'gexp->sexp' and 'lower-inputs'.
     new 1688295  store: Object cache profiling shows the number of entries.
     new 3a8e38c  gexp: Reduce allocations while traversing lists.
     new ee65c07  grafts: Inline 'grafting?' and 'set-grafting'.
     new af3cb5c  store: Micro-optimize object cache lookup.
     new ca70702  gexp: Reduce allocations in 'gexp-attribute'.
     new dc41ed0  serialization: Micro-optimize string literal output in 
'write-file-tree'.
     new a589270  gexp: Optimize 'with-build-variables'.
     new fe75626  packages: Default origin 'patch-flags' is a gexp.
     new 74af8db  gexp: Add 'sexp->gexp'.
     new 7370443  build-system: Use 'sexp->gexp' for plain sexps.
     new b1da83b  build-system: Use 'input-tuples->gexp' and 'outputs->gexp'.

The 20 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.