Todd Gamblin
3f0e6d04e0
commands: add spack url stats command
This command prints out stats about all package versions, like so:
$ spack url stats
==> 6070 total versions for 2827 packages:
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url 5411 89.1%
schemes
https 3822 70.6%
http 1527 28.2%
ftp 27 0.5%
file 35 0.6%
checksums
sha512 6 0.1%
sha256 163 3.0%
sha1 81 1.5%
md5 5161 95.4%
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svn 3 0.0%
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hg 5 0.1%
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go 1 0.0%
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git 650 10.7%
security
no commit 384 59.1%
commit 266 40.9%
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