Dependency improvements, change archive strategy, move stdlib to separate repo, etc

[maxmcd]

No description provided.

[codecov]

Codecov Report

Merging #67 (6f451c5) into main (205f614) will increase coverage by 1.92%.
The diff coverage is 59.50%.

❗ Current head 6f451c5 differs from pull request most recent head da0bae7. Consider uploading reports for the commit da0bae7 to get more accurate results

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   57.01%   58.93%   +1.92%     
==========================================
  Files          60       61       +1     
  Lines        5434     5455      +21     
==========================================
+ Hits         3098     3215     +117     
+ Misses       1893     1771     -122     
- Partials      443      469      +26     

Impacted Files	Coverage Δ
cmd/replacer/main.go	0.00% <0.00%> (ø)
cmd/reptar/main.go	0.00% <0.00%> (ø)
internal/command/build.go	76.19% <0.00%> (+9.70%)	⬆️
internal/store/new_derivation.go	70.17% <0.00%> (ø)
pkg/fileutil/fileutil.go	43.16% <ø> (+4.33%)	⬆️
pkg/httpx/httpx.go	33.82% <0.00%> (-16.18%)	⬇️
pkg/starutil/errors.go	0.00% <0.00%> (ø)
internal/store/package_cache.go	33.33% <33.33%> (ø)
pkg/reptar/reptar.go	56.43% <43.10%> (-8.28%)	⬇️
internal/store/builder.go	64.24% <44.44%> (-1.25%)	⬇️
... and 28 more

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