* guix/store.scm (topologically-sorted): New procedure.
* tests/store.scm ("topologically-sorted, one item",
"topologically-sorted, several items", "topologically-sorted, more
difficult"): New tests.
* guix/store.scm (add-text-to-store): Make 'references' optional.
* tests/store.scm ("dead-paths", "references"): Use 'add-text-to-store'
with no optional argument.
* doc/guix.texi (The Store): Adjust accordingly.
* guix/store.scm: Remove unneeded (ice-9 rdelim) import. In Guile 2.0.9
that module exports `read-string', which conflicts with that of (guix
serialization).
* guix/scripts/substitute-binary.scm: New file.
* Makefile.am (MODULES): Add it.
* nix/scripts/substitute-binary.in: New file.
* config-daemon.ac: Produce nix/scripts/substitute-binary.
* daemon.am (nodist_pkglibexec_SCRIPTS): Add
nix/scripts/substitute-binary.
* guix/store.scm (substitutable-path-info): Use the
`query-substitutable-path-infos' RPC.
* nix/nix-daemon/guix-daemon.cc (main): Honor `NIX_SUBSTITUTERS'.
* pre-inst-env.in: Set `NIX_SUBSTITUTERS'.
* test-env.in: Leave `NIX_SUBSTITUTERS' unchanged. Set
`GUIX_BINARY_SUBSTITUTE_URL, and create
$NIX_STATE_DIR/substituter-data.
Run `guix-daemon' within `./pre-inst-env'.
* tests/store.scm ("substitute query"): New test.
* guix/store.scm (write-contents)[call-with-binary-input-file]: New
procedure.
Use `sendfile' instead of `dump' when available. Add `size'
parameter.
(write-file): Update caller.
* guix/store.scm (&nix-connection-error): New condition type.
(open-connection): Translate `system-error' during the `connect' call
into `&nix-connection-error'.
* guix/ui.scm (call-with-error-handling): Add case for `nix-connection-error?'.
* guix/scripts/package.scm (guix-package): Move `open-connection' call
within `with-error-handling'.
* guix/scripts/pull.scm (guix-pull): Likewise.
* guix/scripts/download.scm (guix-download): Move body within
`with-error-handling'.
* guix/store.scm (%protocol-version): Bump.
(operation-id): Comment out `query-substitutable-path-info'.
Rename `query-valid-paths' to `query-all-valid-paths'. Add
`query-path-from-hash-part', `query-substitutable-path-infos',
`query-valid-paths', and `query-substitutable-paths'.
(set-build-options): Add `binary-caches' keyword parameter. When
using a server >= 1.12, send the list of binary caches.
(query-path-hash): Use the `store-path' type, for clarity.
* guix/store.scm (write-string): Write L as a 32-bit integer. Bug
introduced in 82c38fe64c84fc3febcc5c5aa7fe86454ccaf456 ("store:
Micro-optimize `write-string'.")
* guix/store.scm (open-connection): Call `make-hash-table' with 100.
(add-text-to-store): Move TEXT first in ARGS, for better `hash'
results.
(add-to-store): Likewise, move ST first.
* guix/store.scm (add-to-store): Remove the `fixed?' parameter from the
public interface.
* gnu/packages/bootstrap.scm, guix-download.in, guix/derivations.scm,
guix/packages.scm, tests/derivations.scm: Update all callers
accordingly.
* guix/store.scm (operation): New macro.
(define-operation): Define in terms of `operation'.
(add-text-to-store): Define using `operation', and remove now
unnecessary `set!'.
(add-to-store): Likewise.
(add-text-to-store/cached, add-to-store/cached): Remove.
* guix/store.scm (write-string): Optimize to write the length, contents,
and padding all at once. This yields a 2% improvement on the
execution time of "guix-build gdb".
* guix/store.scm (<nix-server>)[atts-cache]: New field.
(add-text-to-store/cached): New procedure. Use it as a wrapper around
`add-text-to-store'.
When running "guix-build gdb", this reduces the number of RPCs from
3048 to 289, and execution time from 4.7s to 2.6s.
* guix/store.scm (<nix-server>)[ats-cache]: New field.
(open-connection): Update accordingly.
(add-to-store/cached): Use (nix-server-add-to-store-cache SERVER)
instead of a weak hash table.
* guix/store.scm (add-to-store/cached): New variable.
Use it as the new `add-to-store'.
This reduces the number of RPCs when doing "guix-build gdb" from 5009
to 3053, and the execution time from 7s to 3.9s.
* guix/store.scm (gc-action): New enumerate type.
(read-long-long, read-string-list, write-store-path,
write-store-path-list, read-store-path-list): New procedures.
(write-arg): Add support for `store-path' and `store-path-list'.
(read-arg): Add support for `store-path-list'.
(define-operation): Add support for multiple-value returns.
(run-gc, live-paths, dead-paths, collect-garbage, delete-paths): New
procedures.
(%long-long-max): New macro.
* tests/store.scm: New file.
* Makefile.am (TESTS): Add it.
