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`paket install` fails due to JSON parsing error

See original GitHub issue

Description

Please see repro steps.

Repro steps

Locate paket.exe (from Paket latest release). Then run these commands:

paket init
echo github vain0/abdata >> paket.dependencies
paket install

(Note at 2016/May/24 07:55 JST: I use an alias that “paket=.paket\paket.exe”. So please read them as .paket\paket.exe init and .paket\paket.exe install.)

And I got this error:

Paket failed with:
        After parsing a value an unexpected character was encountered: s. Path 'files[7].patch', line 1, position 10814.

Known workarounds

github vain0/hsp_green also invoked a similar error. Then I put paket.dependencies next to “src/all.hsp” (a file in the repository) and rewrite my paket.dependencies like this.

github vain0/hsp_green src/all.hsp

Then paket first fetches “src/all.hsp”, and then it fetches all files in the repository due to the transitive dependency written in that paket.dependencies.

Other cases

Failure cases:
- github/zeo_five_hsp (contains no files related to Paket)
  - Error message: Bad JSON escape sequence: \・. Path ‘files[9].patch’, line 1, position 3 5330.
- github/speed_fs (contains paket.dependencies in the root)
  - Error message: After parsing a value an unexpected character was encountered: s. Path ‘files[0].patch’, line 1, position 5073.
Success cases:
- github vain0/git_edit (which contains no files related to paket), ``github vain0/rss_reader_fs` (which contains paket.dependencies), etc