Commit Graph

49 Commits

Author SHA1 Message Date
Ludovic Courtès 0363991a25 Break module cycle involving (guix store) and (guix ui).
Before, there was a cycle along the lines of:

  (guix store) -> (guix nar) -> (guix ui) -> (guix store)

This caused problems, as discussed at:

  http://lists.gnu.org/archive/html/guix-devel/2014-10/msg00109.html

This patch removes cycles in the (guix ...) modules.

* guix/nar.scm (&nar-error, &nar-read-error, dump, write-contents,
  read-contents, %archive-version-1, write-file, restore-file): Move to...
* guix/serialization.scm: ... here.
* guix/store.scm: Remove dependency on (guix nar).
* guix/scripts/hash.scm, guix/scripts/offload.scm,
  guix/scripts/substitute-binary.scm, tests/nar.scm, tests/store.scm,
  tests/substitute-binary.scm: Adjust accordingly.
2014-10-09 23:51:19 +02:00
Ludovic Courtès 4938b0eead substitute-binary: Ignore $GUIX_BINARY_SUBSTITUTE_URL.
* guix/scripts/substitute-binary.scm (%cache-url): Ignore the
  'GUIX_BINARY_SUBSTITUTE_URL' environment variable.
* test-env.in: Invoke 'guix-daemon' with '--substitute-urls'.
* tests/substitute-binary.scm: Set '%cache-url' to the value of
  'GUIX_BINARY_SUBSTITUTE_URL'.
2014-10-09 23:51:19 +02:00
Ludovic Courtès 9176607ec4 daemon: Add '--substitute-urls' option.
* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_SUBSTITUTE_URLS): New macro.
  (GUIX_OPT_NO_BUILD_HOOK, GUIX_OPT_GC_KEEP_OUTPUTS,
  GUIX_OPT_GC_KEEP_DERIVATIONS): Renumber.
  (options): Add '--substitute-urls'.
  (parse_opt): Honor it.
  (main): Add 'settings.set' call for the default "substitute-urls"
  value.
* guix/scripts/substitute-binary.scm (daemon-options,
  find-daemon-option): New procedures.
  (%cache-url): Define based on the "substitute-urls" daemon option.
* doc/guix.texi (Invoking guix-daemon): Document '--substitute-urls'.
  (Substitutes): Mention it.
2014-10-09 23:51:19 +02:00
Ludovic Courtès f513527a8e Merge branch 'core-updates' 2014-06-20 23:44:42 +02:00
Ludovic Courtès 00fe93338d substitute-binary: Warn about uninitialized ACL.
* guix/scripts/substitute-binary.scm (guix-substitute-binary): Call
  'check-acl-initialized'.
  (check-acl-initialized): Don't rely on 'equal?' to compare keys.
  Instead, convert keys to strings.
2014-06-19 23:35:41 +02:00
Ludovic Courtès 2eea253f4d substitute-binary: Avoid the term "narinfo" in user messages.
* guix/scripts/substitute-binary.scm (assert-valid-narinfo): Change
  message to avoid the term "narinfo".
2014-06-17 00:30:16 +02:00
Ludovic Courtès 6ef3644e34 pk-crypto: Add pretty-printer to 'gcry-error' exceptions.
* guix/pk-crypto.scm (string->canonical-sexp, sign, generate-key): Pass
  the procedure name as the first argument to 'throw'.
  (gcrypt-error-printer): New procedure.
  <top level>: Add call to 'set-exception-printer!'.
* guix/nar.scm (restore-one-item): Add 'proc' parameter to 'catch'
  handler for 'gcry-error.
* guix/scripts/archive.scm (%options, generate-key-pair, authorize-key):
  Likewise.
* guix/scripts/substitute-binary.scm (narinfo-signature->canonical-sexp):
  Likewise.
2014-04-22 11:41:52 +02:00
Ludovic Courtès 57832f2ce7 substitute-binary: Avoid consing 'regexp-exec' arguments.
* guix/scripts/substitute-binary.scm (regexp-exec): Change formals
  to (rx str . rest).
2014-04-01 23:47:51 +02:00
Ludovic Courtès c6e9485924 substitute-binary: Avoid reloading the ACL repeatedly.
* guix/scripts/substitute-binary.scm (guix-substitute-binary) <--query>:
  Cache the result of (current-acl); pass it to 'valid-narinfo?' calls.
  This saves 12% wall-clock time for "guix build emacs -n".
2014-04-01 23:47:51 +02:00
Ludovic Courtès e4687a5e68 Use 'signature-case' in (guix nar) and 'substitute-binary'.
* guix/nar.scm (restore-file-set)[assert-valid-signature]: Rewrite in
  terms of 'signature-case'.
* guix/scripts/substitute-binary.scm (narinfo-signature->canonical-sexp):
  Call 'leave' instead of 'raise' when SIGNATURE is invalid.
  (&nar-signature-error, &nar-invalid-hash-error): Remove.
  (assert-valid-signature): Add 'narinfo' parameter; remove 'port'.
  Rewrite in terms of 'signature-case' and 'leave'.  Mention NARINFO's
  URI in error messages.  Adjust caller.
  (narinfo-sha256): New procedure.
  (assert-valid-narinfo): Use it.
  (valid-narinfo?): Rewrite using 'narinfo-sha256' and
  'signature-case'.
* tests/substitute-binary.scm (assert-valid-signature,
  test-error-condition): Remove.
  ("corrupt signature data", "unauthorized public key", "invalid
  signature"): Remove.
2014-03-31 23:47:02 +02:00
Ludovic Courtès 8146fdb334 substitute-binary: Notify of valid signatures.
* guix/scripts/substitute-binary.scm (assert-valid-narinfo): Add
  #:verbose? parameter; when true, write "found valid signature".
  (valid-narinfo?): Pass #:verbose? #f.
2014-03-31 21:59:14 +02:00
Ludovic Courtès cdea30e061 substitute-binary: Defer narinfo authentication and authorization checks.
* guix/scripts/substitute-binary.scm (narinfo-signature->canonical-sexp):
  Catch 'gcry-error' around 'string->canonical-sexp' call, and re-raise
  as a SRFI-35 &message and &nar-signature-error.
  (narinfo-maker): Handle when SIGNATURE is #f or an invalid canonical
  sexp.
  (&nar-signature-error, &nar-invalid-hash-error): New variables.
  (assert-valid-signature): Use them.  Expect 'signature' to be a
  canonical sexp.
  (read-narinfo): Remove authentication and authorization checks.
  (%signature-line-rx): New variable.
  (assert-valid-narinfo, valid-narinfo?): New procedures.
  (guix-substitute-binary): Wrap body in 'with-error-handling'.
  [valid?]: New procedure.
  <--query>: Show only store items of narinfos that match
  'valid-narinfo?'.
  <--substitute>: Call 'assert-valid-narinfo'.
* tests/substitute-binary.scm (test-error*): Use 'test-equal'.
  (%keypair): Remove.
  (%public-key, %private-key): Load from signing-key.{pub,sec}.
  (signature-body): Add #:public-key parameter.
  (call-with-narinfo): New procedure.
  (with-narinfo): New macro.
  ("corrupt signature data", "unauthorized public key", "invalid
  signature"): Make the first argument to 'assert-valid-signature' a
  canonical sexp.
  ("invalid hash", "valid read-narinfo", "valid write-narinfo"):
  Remove.
  ("query narinfo with invalid hash", "query narinfo signed with
  authorized key", "query narinfo signed with unauthorized key",
  "substitute, invalid hash", "substitute, unauthorized key"): New
  tests.
2014-03-30 22:32:11 +02:00
Ludovic Courtès 00230df107 substitute-binary: Store the cache's URI in the local cached narinfo.
* guix/scripts/substitute-binary.scm (<narinfo>)[uri-base]: New field.
  (narinfo-maker): Pass CACHE-URL as the 'uri-base' value.
  (string->narinfo): Add 'cache-uri' parameter.
  (lookup-narinfo)[cache-entry]: Switch to version 1.  Add 'cache-uri'
  field.  Adjust body accordingly.
  (remove-expired-cached-narinfos): Switch to version 1 by default.
2014-03-30 12:02:10 +02:00
Nikita Karetnikov e9c6c58418 substitute-binary: Support the Signature field of a narinfo file.
* guix/scripts/substitute-binary.scm (<narinfo>): Add the 'signature'
  and 'contents' fields.
  (narinfo-signature->canonical-sexp): New function.
  (narinfo-maker): Add the 'signature' argument and use it.
  (assert-valid-signature): New function.
  (read-narinfo): Support the Signature field.
  (write-narinfo): Use 'narinfo-contents'.
  (%allow-unauthenticated-substitutes?): New variable.
* guix/base64.scm, tests/base64.scm, tests/substitute-binary.scm: New files.
* Makefile.am (SCM_TESTS): Add tests/base64.scm and
  tests/substitute-binary.scm.
  (MODULES): Add guix/base64.scm.
* test-env.in: Set 'GUIX_ALLOW_UNAUTHENTICATED_SUBSTITUTES'.
2014-03-30 12:02:10 +02:00
Ludovic Courtès 7a8024a33a utils: Add 'decompressed-port' and 'compressed-port'.
* guix/utils.scm (decompressed-port, compressed-port): New procedures.
* guix/scripts/substitute-binary.scm (decompressed-port): Remove.
  (guix-substitute-binary): Pass a symbol or #f as the first argument to
  'decompress-port'.
* tests/utils.scm ("compressed-port, decompressed-port, non-file"): New
  test.
2014-03-22 22:57:09 +01:00
Ludovic Courtès 19ee8c7dc5 substitute-binary: Quietly handle 404s when fetching narinfos.
* guix/scripts/substitute-binary.scm (fetch): Add #:quiet-404?
  parameter.  Upon &http-get-error, re-raise C if the QUIET-404? is
  true and the code is 404.
  (fetch-narinfo): Pass #:quiet-404? #t.
2014-03-19 22:26:08 +01:00
Ludovic Courtès 706e9e575d substitute-binary: Gracefully handle HTTP GET errors.
* guix/http-client.scm (&http-get-error): New condition type.
  (http-fetch): Raise it instead of using 'error'.
* guix/scripts/substitute-binary.scm (fetch) <http>: Wrap body into
  'guard' form; gracefully handle 'http-get-error?' conditions.
2014-03-01 15:38:11 +01:00
Ludovic Courtès d43eb499a6 Update 'nix-upstream' sub-module; adjust build system, doc, and substituter.
* nix-upstream: Update sub-module.
* daemon.am (libutil_a_SOURCES): Add affinity.cc.
  (libutil_headers): Add affinity.hh.
  (libexec_PROGRAMS, nix_setuid_helper_SOURCES,
  nix_setuid_helper_CPPFLAGS, nix_setuid_helper_LDADD): Remove.
* doc/guix.texi (Setting Up the Daemon): Remove paragraph about
  'nix-setuid-helper'.
* guix/scripts/substitute-binary.scm (guix-substitute-binary): Exit 0 when
  %CACHE-URL has an HTTP scheme and looking up its host fails.
  Always print a newline to stdout when starting.
2014-01-18 22:32:50 +01:00
Ludovic Courtès 04d4c8a439 Move 'with-atomic-file-output' to (guix utils).
* guix/scripts/substitute-binary.scm (with-atomic-file-output): Move to...
* guix/utils.scm (with-atomic-file-output): ... here.
2013-12-29 15:57:24 +01:00
Ludovic Courtès de6792699e substitute-binary: Work around Guile 2.0.5's broken 'n-par-map'.
* guix/scripts/substitute-binary.scm (n-par-map*): New procedure.
  (guix-substitute-binary): Use it instead of 'n-par-map'.
  Reported by Nikita Karetnikov and Eric Bavier.
2013-11-26 22:20:39 +01:00
Ludovic Courtès c509bf8c87 substitute-binary: Adjust timeout handling for Guile > 2.0.9.
* guix/scripts/substitute-binary.scm (with-timeout): Update comment to
  mention the fix's commit ID.
  (fetch): In the 'with-timeout' handler, close PORT only one Guile
  versions < 2.0.9.39.  Before that, on Guile >= 2.0.9.39, the HTTP
  client would end up trying to read from a closed file descriptor.
2013-11-14 01:09:07 +01:00
Ludovic Courtès 50dc48922c substitute-binary: Increase lookup concurrency to reduce latency.
* guix/scripts/substitute-binary.scm (%lookup-threads): New variable.
  (guix-substitute-binary): Use 'n-par-map' instead of 'par-map' for
  batch 'lookup-narinfo' calls.
2013-11-08 22:47:02 +01:00
Ludovic Courtès 29479de565 substitute-binary: Add '--help'.
Reported by Nikita Karetnikov <nikita@karetnikov.org>.

* guix/scripts/substitute-binary.scm (show-help): New procedure.
  (guix-substitute-binary): Add '--help'.
2013-09-13 23:42:36 +02:00
Ludovic Courtès 00554b2a0f substitute-binary: Show the Nar size, when available.
* guix/scripts/substitute-binary.scm (guix-substitute-binary)["--substitute"]:
  Show the Nar size, when available.
* guix/ui.scm (show-what-to-build): Add 'TODO'.
2013-09-02 23:33:13 +02:00
Ludovic Courtès 7db3ff4a29 utils: Add `guile-version>?', and use it.
This fixes Guile version comparisons when (version) has a
vendor-specific suffix.

Reported by Andreas Enge <andreas@enge.fr>.

* guix/utils.scm (guile-version>?): New procedure.
* tests/utils.scm ("guile-version>? 1.8", "guile-version>? 10.5"): New
  tests.
* guix/scripts/substitute-binary.scm (fetch, progress-report-port): Use
  `guile-version>?' instead of `version>?'.
* guix/http-client.scm (when-guile<=2.0.5, http-fetch): Likewise.
2013-08-23 15:51:36 +02:00
Ludovic Courtès b6952cad8d substitute-binary: Try hard to avoid port buffering.
* guix/scripts/substitute-binary.scm (fetch): In the `file' case, open
  with the `b' flag, so that the coding cookie reading thing doesn't
  lead to buffering some of the data (on 2.0.5).
* tests/utils.scm ("filtered-port, file"): Open with `r0b'.  Fixes a
  test failure with Guile 2.0.5 whereby the first byte of FILE would be
  missing from DECOMPRESSED.
2013-08-22 17:14:20 +02:00
Ludovic Courtès db90b40dfd substitute-binary: Don't pretend to report download progress on Guile 2.0.5.
* guix/scripts/substitute-binary.scm (progress-report-port): On Guile
  2.0.5, return PORT directly and emit a warning.
2013-08-21 02:19:36 +02:00
Ludovic Courtès 3b8258c569 Rename (guix web) to (guix http-client).
* guix/web.scm: Rename to...
* guix/http-client.scm: ... this.
* guix/gnu-maintenance.scm, guix/scripts/substitute-binary.scm,
  Makefile.am, po/POTFILES.in: Update accordingly.
2013-07-14 16:44:15 +02:00
Ludovic Courtès ce689ccf18 substitute-binary: Directly replace the global `regexp-exec'.
* guix/scripts/substitute-binary.scm (%regexp-exec-mutex, string->uri):
  Remove.
  (regexp-exec): Replace this global binding by a thread-safety wrapper.
  (fields->alist): Remove `with-mutex', and directly alias `recutils->alist'.
2013-07-11 22:42:41 +02:00
Ludovic Courtès 8b79e2e641 substitute-binary: Increase the default timeout.
* guix/scripts/substitute-binary.scm (%fetch-timeout): Set to 5 seconds.
2013-07-11 22:22:22 +02:00
Ludovic Courtès fdc1bf659d records: Add `recutils->alist' for public consumption.
* guix/records.scm (%recutils-field-rx): New variable.
  (recutils->alist): New procedure, formerly known as `fields->alist'.
* guix/scripts/substitute-binary.scm (fields->alist): Use it.
* tests/records.scm ("recutils->alist"): New test.
2013-07-10 17:01:08 +02:00
Ludovic Courtès bb7dcaea57 substitute-binary: Avoid dangling connections to the server.
* guix/web.scm (open-socket-for-uri): New procedure.
  (http-fetch): Add `port' keyword parameter; use it.
* guix/scripts/substitute-binary.scm (%random-state): New variable.
  (with-timeout): Wait a little before retrying.
  (fetch): Use `open-socket-for-uri', and keep a copy of the socket in
  variable `port'.  Close PORT upon timeout.
2013-06-29 22:20:25 +02:00
Ludovic Courtès a85060efec substitute-binary: Report progress while downloading.
* guix/scripts/substitute-binary.scm (decompressed-port): Improve docstring.
  (progress-report-port): New procedure.
  (guix-substitute-binary)["--substitute"]: Use it to report progress.
* guix/build/download.scm: Export `progress-proc' and `uri-abbreviation'.
2013-06-20 23:41:28 +02:00
Ludovic Courtès 2207f73156 substitute-binary: Provide feedback when the server is unresponsive.
* guix/scripts/substitute-binary.scm (%fetch-timeout): New variable.
  (with-timeout): New macro.
  (fetch): Add `timeout?' keyword parameter.  Enclose `http-fetch' call
  in `with-timeout'.
  (guix-substitute-binary): Call `fetch' with #:timeout? #f.
2013-06-18 00:12:22 +02:00
Ludovic Courtès ae3b6bb0f4 substitute-binary: Don't cache .narinfo lookups when lacking networking.
* guix/scripts/substitute-binary.scm (lookup-narinfo): Don't cache
  NARINFO when CACHE is #f.
2013-06-04 09:43:38 +02:00
Ludovic Courtès cf5d2ca329 substitute-binary: Gracefully exit upon networking errors.
Suggested by Andreas Enge <andreas@enge.fr>.

* guix/scripts/substitute-binary.scm (with-networking): New macro.
  (guix-substitute-binary): Wrap the body in `with-networking'.
2013-05-29 23:22:05 +02:00
Ludovic Courtès 101d9f3fd4 substitute-binary: Pass `filtered-port' an unbuffered port.
This fixes a bug whereby `read-response' would read more than just the
response, with the extra data going into the port's buffer; the
"bzip2 -dc" process spawned by `filtered-port' would not see the those
buffered data, which are definitely lost, and would bail out with
"bzip2: (stdin) is not a bzip2 file."

* guix/utils.scm (filtered-port): Document that INPUT must be
  unbuffered.
* guix/web.scm (http-fetch): Add `buffered?' parameter.  Call
  `open-socket-for-uri' explicitly, and call `setvbuf' when BUFFERED? is
  false.  Pass the port to `http-get'.  Close it upon 301/302.
* guix/scripts/substitute-binary.scm (fetch): Add `buffered?'
  parameter.  Pass it to `http-fetch'; honor it for `file' URIs.
  (guix-substitute-binary): Call `fetch' with #:buffered? #f for port RAW.
* tests/utils.scm ("filtered-port, file"): Open FILE as unbuffered.
2013-05-15 23:40:09 +02:00
Ludovic Courtès 0332386251 substitute-binary: Work around thread-unsafe `regexp-exec'.
* guix/scripts/substitute-binary.scm (%regexp-exec-mutex): New variable.
  (string->uri): New procedure.
  (fields->alist): Wrap `regexp-exec' call in `with-mutex'.
2013-05-14 23:53:38 +02:00
Ludovic Courtès c0cd1b3ea7 Move record utilities to (guix records).
* guix/utils.scm (define-record-type*): Move to...
* guix/records.scm: ... here.  New file.
* guix/build-system.scm, guix/packages.scm: Use it.
* guix/gnu-maintenance.scm: Likewise.
  (official-gnu-packages)[alist->record]: Remove.
* guix/scripts/substitute-binary.scm: Likewise.
  (alist->record, object->fields): Remove.
* tests/utils.scm ("define-record-type*", "define-record-type* with
  letrec* behavior", "define-record-type* & inherit",
  "define-record-type* & inherit & letrec* behavior",
  "define-record-type* & thunked", "define-record-type* & thunked &
  default", "define-record-type* & thunked & inherited"): Move to...
* tests/records.scm: ... here.  New file.
2013-05-12 15:46:16 +02:00
Ludovic Courtès e0fbbc889d substitute-binary: Support decompression from non-file ports.
* guix/scripts/substitute-binary.scm (filtered-port): Move to utils.scm.
  (decompressed-port): Upon "none", return '() as the second value.
  (guix-substitute-binary): Expect `decompressed-port' to return a list
  of PIDs as its second value.
* guix/utils.scm (filtered-port): New procedure.  Add case for when
  INPUT is not `file-port?'.
* tests/utils.scm ("filtered-port, file", "filtered-port, non-file"):
  New tests.
2013-04-29 23:25:19 +02:00
Ludovic Courtès 1c9e7d65d4 web: Factorize `http-get' hackery.
This should fix `substitute-binary --query' on Guile 2.0.5.

* guix/web.scm: New file.
* Makefile.am (MODULES): Add it.
* po/POTFILES.in: Add it.
* guix/gnu-maintenance.scm (http-fetch): Remove.
  (%package-list-url): Turn into a URI.
  (official-gnu-packages): Add #:text? #t to `http-fetch' call.
* guix/scripts/substitute-binary.scm (fetch): Remove `http' case, and
  use `http-fetch' instead.
2013-04-25 22:14:51 +02:00
Ludovic Courtès 4c7cacf117 substitute-binary: Remove expired cache entries once in a while.
* guix/scripts/substitute-binary.scm (%narinfo-expired-cache-entry-removal-delay):
  New variable.
  (obsolete?): New procedure, formerly in `lookup-narinfo'.
  (lookup-narinfo): Adjust accordingly.
  (remove-expired-cached-narinfos, maybe-remove-expired-cached-narinfo):
  New procedures.
  (guix-substitute-binary): Call `maybe-remove-expired-cached-narinfo'.
2013-04-20 15:12:24 +02:00
Ludovic Courtès e967678ed1 substitute-binary: Skip servers that use a different store prefix.
* guix/scripts/substitute-binary.scm (fetch-narinfo): Return #f when
  CACHE uses a store directory different from (%store-prefix).
2013-04-15 23:43:13 +02:00
Ludovic Courtès 0c357a088b substitute-binary: Call `open-cache' only when needed.
* guix/scripts/substitute-binary.scm (lookup-narinfo): Force CACHE when
  passing it to `fetch-narinfo'.
  (guix-substitute-binary): Delay calls to `open-cache'.
2013-04-15 23:43:10 +02:00
Ludovic Courtès eba783b7b2 substitute-binary: Add a local cache.
* guix/scripts/substitute-binary.scm (%narinfo-cache-directory,
  %narinfo-ttl, %narinfo-negative-ttl): New variables.
  (with-atomic-file-output, object->fields, read-narinfo,
  write-narinfo, narinfo->string, string->narinfo, lookup-narinfo): New
  procedures.
  (fetch-narinfo): Adjust to use `read-narinfo'.
  (guix-substitute-binary): Ensure the existence of
  %NARINFO-CACHE-DIRECTORY.  Use `lookup-narinfo' instead of
  `fetch-narinfo'.
2013-04-15 23:42:55 +02:00
Ludovic Courtès fe0cff14f6 substitute-binary: Implement `--substitute'.
This allows build outputs to be transparently downloaded from
http://hydra.gnu.org, for example.

* config-daemon.ac: Check for `gzip', `bzip2', and `xz'.
* guix/config.scm.in (%gzip, %bzip2, %xz): New variable.
* guix/scripts/substitute-binary.scm (fetch): Return SIZE as a second value.
  (<narinfo>): Change `url' to `uri'.
  (make-narinfo): Rename to...
  (narinfo-maker): ... this.  Handle relative URLs.
  (fetch-narinfo): Adjust accordingly.
  (filtered-port, decompressed-port): New procedures.
  (guix-substitute-binary): Implement the `--substitute' case.
* tests/store.scm ("substitute query"): Use (%store-prefix) instead
  of (getenv "NIX_STORE_DIR").
  ("substitute"): New test.
2013-04-12 17:31:01 +02:00
Ludovic Courtès d7c5d27795 substitute-binary: Correctly handle missing narinfos in `--query' mode.
* guix/scripts/substitute-binary.scm (guix-substitute-binary)["--query"]("have",
  "info"): Filter SUBSTITUTABLE through `narinfo?'.
2013-04-12 17:30:47 +02:00
Ludovic Courtès 462f8e9f33 substitute-binary: Fix communication of several store paths to the daemon.
* guix/scripts/substitute-binary.scm (guix-substitute-binary)["--query"]:
  Emit blank lines only after the complete list of store paths has been
  returned.
2013-04-04 21:47:55 +02:00
Ludovic Courtès f65cf81a3c Add preliminary binary substituter.
* 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.
2013-04-03 22:44:39 +02:00