bug#44574: guix weather not checking all substitute urls

[Efraim Flashner <efraim@flashner.co.il>]

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I would have assumed that it would check for all of the substitute urls
I listed and not just the first one. Most of the packages listed below
I've test built on my pine64 so they shouldn't appear in the list
anymore.

(ins)efraim@E5400 ~/workspace/guix-1.2.0$ time ./pre-inst-env guix weather -c 100 --system=aarch64-linux --substitute-urls="https://ci.guix.gnu.org http://pine64:3000"
computing 14,359 package derivations for aarch64-linux...
looking for 14,945 store items on https://ci.guix.gnu.org...
updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
https://ci.guix.gnu.org
  52.4% substitutes available (7,838 out of 14,945)
  at least 25,425.6 MiB of nars (compressed)
  46,859.9 MiB on disk (uncompressed)
  0.002 seconds per request (30.7 seconds in total)
  487.1 requests per second

  0.0% (3 out of 7,107) of the missing items are queued
  at least 1,000 queued builds
      aarch64-linux: 123 (12.3%)
      i686-linux: 401 (40.1%)
      x86_64-linux: 404 (40.4%)
      armhf-linux: 72 (7.2%)
  build rate: 124.61 builds per hour
      x86_64-linux: 50.96 builds per hour
      i686-linux: 35.14 builds per hour
      armhf-linux: 17.95 builds per hour
      aarch64-linux: 20.57 builds per hour
updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
1857 packages are missing from 'https://ci.guix.gnu.org' for 'aarch64-linux', among which:
  1625  rust@1.24.1     /gnu/store/iaw29nqdhsvpg1zi4xh2i7q9v813kjyw-rust-1.24.1-cargo /gnu/store/kgn4q5nfdmh4hx32b1zd907ri0a26x26-rust-1.24.1-doc /gnu/store/fm
k8vnwc1x8a91w5ybdrfbfrfiq91d3y-rust-1.24.1
   766  ghc@7.10.2      /gnu/store/zcvd3yqka7s1gn323y202rqxirmldawi-ghc-7.10.2-doc /gnu/store/vhhjk5z31rgxw82bv3dmrhz2fyhvh3yl-ghc-7.10.2
   749  r-yaml@2.2.1    /gnu/store/d06vsnv4rbkz389g7wrh0xbr3mb37rbk-r-yaml-2.2.1
   747  r-highr@0.8     /gnu/store/gjwsyw35p4c6cd7gqrnl4xjpgys6pic7-r-highr-0.8
   562  jamvm@1.5.1     /gnu/store/mwgkpyjgrw4cnvkhglz2605i7c1rpfva-jamvm-1.5.1
   509  sbcl-lift@1.7.1-1.7d49a66       /gnu/store/javclx2bycs1ig5rc0z5zw86ljwc5x5m-sbcl-lift-1.7.1-1.7d49a66
   488  r-rlang@0.4.8   /gnu/store/l50wdpz16295diabmp2pkkvz2q0f52p3-r-rlang-0.4.8
   487  sbcl-net.didierverna.asdf-flv@2.1       /gnu/store/mk4lpkafkbpsncf7qf7i310ix9h14xal-sbcl-net.didierverna.asdf-flv-2.1
   451  r-bh@1.72.0-3   /gnu/store/0n560alajilbryj94z46wabfkq6hjjm9-r-bh-1.72.0-3
   436  sbcl-trivial-gray-streams@0.0.0-1.ebd59b1       /gnu/store/s4cghmgb9pf79zw9z81lnp9ff5rx6p0g-sbcl-trivial-gray-streams-0.0.0-1.ebd59b1
   245  r-munsell@0.5.0 /gnu/store/2gwfqxkpjvk4yjycs26n17dxkxd2w5m0-r-munsell-0.5.0
   236  r-r-cache@0.14.0        /gnu/store/2g3c41lnvir5rr5ppn3svf2acqzs2290-r-r-cache-0.14.0
   236  sbcl-cffi-libffi@0.21.0 /gnu/store/znfcdhp684zvjcipi5dvydn5886xzsa4-sbcl-cffi-libffi-0.21.0
   175  libpipeline@1.5.3       /gnu/store/6qi0yj1i61py5mhg02vll8b6gbjilngl-libpipeline-1.5.3
   173  r-curl@4.3      /gnu/store/gv0jw7rsmjq6a6xzzil1xlml2yd59mm8-r-curl-4.3
   169  python2-cffi@1.14.0     /gnu/store/d24l9z1an90d9h2dk5zhliwp5rirh6ic-python2-cffi-1.14.0
   160  python2-iso8601@0.1.12  /gnu/store/ncbiv7lrikp7hqj6nykd4hsrjillg5rg-python2-iso8601-0.1.12
   156  python2-pytest-cov@2.8.1        /gnu/store/xdxx4w89lqcdi9yzxrjzd2fwbq58a7dk-python2-pytest-cov-2.8.1
   156  sbcl-closer-mop@1.0.0-2.19c9d33 /gnu/store/c4mch43a7w4ivhrcz0wkfb2936dyr8p3-sbcl-closer-mop-1.0.0-2.19c9d33
   154  kservice@5.70.0 /gnu/store/2lhmsz7k8hgqhgahcj6bfcgmknnfbk5w-kservice-5.70.0
   151  r-survival@3.2-7        /gnu/store/5yfkcacmm4lpygvfb8xk291p9f10c244-r-survival-3.2-7
   148  sbcl-trivial-garbage@0.21       /gnu/store/zz75ir2q0k7gd6wprr42vxg7vsjcrb0i-sbcl-trivial-garbage-0.21
   138  cl-trivial-features@0.8-1.870d03d       /gnu/store/6apvh159ld0b1rwsbzav1ls90bgiq5ad-cl-trivial-features-0.8-1.870d03d
   132  python2-markupsafe@1.1.1        /gnu/store/hc6aami5qjwrmdfsj0m6rky5qsz0518n-python2-markupsafe-1.1.1
   128  zeromq@4.3.3    /gnu/store/kpwiaj4ng31p71p15rdww6fnggc54l8w-zeromq-4.3.3
   113  webkitgtk@2.30.2        /gnu/store/2hv5x29z673nzn4m11h21xxzgb0k47hv-webkitgtk-2.30.2-doc /gnu/store/whxb77cnsbhwd0dn0dcam8hjpz0z5ffy-webkitgtk-2.30.2
   110  numactl@2.0.14  /gnu/store/dlc90qk7152iqf702hkp5y1axb8fr1dj-numactl-2.0.14
   106  emacs-shut-up@0.3.2     /gnu/store/g6vjsdslm4m3bp6wbz0j9rwnmp3vr1x8-emacs-shut-up-0.3.2
   105  emacs-f@0.20.0  /gnu/store/ars7lf4vswnw731pklng4dprwmw41km0-emacs-f-0.20.0

real    2m43.059s
user    2m10.339s
sys     0m3.571s

When I reversed the order of the substitute servers:
(ins)efraim@E5400 ~/workspace/guix-1.2.0$ time ./pre-inst-env guix weather -c 100 --system=aarch64-linux --substitute-urls="http://pine64:3000 https://ci.guix.gnu.org"
computing 14,359 package derivations for aarch64-linux...
looking for 14,945 store items on http://pine64:3000...
updating substitutes from 'http://pine64:3000'... 100.0%
http://pine64:3000
  7.7% substitutes available (1,148 out of 14,945)
  unknown substitute sizes
  5,199.5 MiB on disk (uncompressed)
  0.011 seconds per request (171.8 seconds in total)
  86.0 requests per second
  (continuous integration information unavailable)
updating substitutes from 'http://pine64:3000'... 100.0%
4885 packages are missing from 'http://pine64:3000' for 'aarch64-linux', among which:
  10801 python-minimal@3.8.2    /gnu/store/r7ncfbpi0q153qybcbhpzqf5rf6wg4pg-python-minimal-3.8.2
  10651 xtrans@1.4.0    /gnu/store/an00f8f7cq2hdh5pak9f50ngx4xy0bgq-xtrans-1.4.0
  8954  autoconf-wrapper@2.69   /gnu/store/3m5kvv8a5196gk1x3n0qdn5f07g9v4gb-autoconf-wrapper-2.69
  8470  datefudge@1.23  /gnu/store/rwk9qqb61iyn2bqy4w39j4v9llrqc6xk-datefudge-1.23
  <..snip..>

-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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