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              "url": "http://arduino.esp8266.com/linux64-xtensa-lx106-elf-gb404fb9.tar.gz", 
              "checksum": "SHA-256:46f057fbd8b320889a26167daf325038912096d09940b2a95489db92431473b7", 
              "host": "x86_64-pc-linux-gnu", 
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              "url": "http://arduino.esp8266.com/linux32-xtensa-lx106-elf.tar.gz", 
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            }, 
            {
              "url": "http://arduino.esp8266.com/osx-xtensa-lx106-elf-gb404fb9-2.tar.gz", 
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            {
              "url": "http://arduino.esp8266.com/osx-xtensa-lx106-elf-gb404fb9-2.tar.gz", 
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              "url": "http://arduino.esp8266.com/linux64-xtensa-lx106-elf-gb404fb9.tar.gz", 
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              "url": "http://arduino.esp8266.com/linux32-xtensa-lx106-elf.tar.gz", 
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              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.8/esptool-0.4.8-win32.zip", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.8/esptool-0.4.8-osx.tar.gz", 
              "checksum": "SHA-256:2bcbf19934543fb06c505b2a595b68a76e4cab8e3d8968a4d1802195c87126cf", 
              "host": "x86_64-apple-darwin", 
              "archiveFileName": "esptool-0.4.8-osx.tar.gz", 
              "size": "28798"
            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.8/esptool-0.4.8-osx.tar.gz", 
              "checksum": "SHA-256:2bcbf19934543fb06c505b2a595b68a76e4cab8e3d8968a4d1802195c87126cf", 
              "host": "i386-apple-darwin", 
              "archiveFileName": "esptool-0.4.8-osx.tar.gz", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.8/esptool-0.4.8-linux64.tar.gz", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.8/esptool-0.4.8-linux32.tar.gz", 
              "checksum": "SHA-256:b0d6e71e6f41d4ed7e167bb4b3f4f0b1b3e49d69af50ab7fbe952cbfed83f164", 
              "host": "i686-pc-linux-gnu", 
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              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.5/esptool-0.4.5-win32.zip", 
              "checksum": "SHA-256:1b0a7d254e74942d820a09281aa5dc2af1c8314ae5ee1a5abb0653d0580e531b", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.5/esptool-0.4.5-osx.tar.gz", 
              "checksum": "SHA-256:924d31c64f4bb9f748e70806dafbabb15e5eb80afcdde33715f3ec884be1652d", 
              "host": "x86_64-apple-darwin", 
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              "size": "11359"
            }, 
            {
              "url": "http://arduino.esp8266.com/esptool-0.4.5-1-gfaa5794-osx.tar.gz", 
              "checksum": "SHA-256:722142071f6cf4d8c02dea42497a747e06abf583d86137a6a256b7db71dc61f6", 
              "host": "i386-apple-darwin", 
              "archiveFileName": "esptool-0.4.5-1-gfaa5794-osx.tar.gz", 
              "size": "20751"
            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.5/esptool-0.4.5-linux64.tar.gz", 
              "checksum": "SHA-256:4ce799e13fbd89f8a8f08a08db77dc3b1362c4486306fe1b3801dee80cfa3203", 
              "host": "x86_64-pc-linux-gnu", 
              "archiveFileName": "esptool-0.4.5-linux64.tar.gz", 
              "size": "12789"
            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.5/esptool-0.4.5-linux32.tar.gz", 
              "checksum": "SHA-256:a7a2c3200786d7396e8cafca1b9aefe56db8ec1dab5e9163d4a19358232a7d87", 
              "host": "i686-pc-linux-gnu", 
              "archiveFileName": "esptool-0.4.5-linux32.tar.gz", 
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              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.6/esptool-0.4.6-win32.zip", 
              "checksum": "SHA-256:0248bf78514a3195f583e29218ca7828a66e13c6e5545a078f1c1257033e4927", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.6/esptool-0.4.6-osx.tar.gz", 
              "checksum": "SHA-256:0fe87ba7e29ee90a9fc72492aada8c0796f9e8f8a1c594b6b26cee2610d09bb3", 
              "host": "x86_64-apple-darwin", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.6/esptool-0.4.6-osx.tar.gz", 
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              "host": "i386-apple-darwin", 
              "archiveFileName": "esptool-0.4.6-osx.tar.gz", 
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            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.6/esptool-0.4.6-linux64.tar.gz", 
              "checksum": "SHA-256:f9f456e9a42bb2597126c513cb8865f923fb978865d4838b9623d322216b74d0", 
              "host": "x86_64-pc-linux-gnu", 
              "archiveFileName": "esptool-0.4.6-linux64.tar.gz", 
              "size": "12885"
            }, 
            {
              "url": "https://github.com/igrr/esptool-ck/releases/download/0.4.6/esptool-0.4.6-linux32.tar.gz", 
              "checksum": "SHA-256:85275ca03a82bfc456f5a84e86962ca1e470ea2e168829c38ca29ee668831d93", 
              "host": "i686-pc-linux-gnu", 
              "archiveFileName": "esptool-0.4.6-linux32.tar.gz", 
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              "url": "https://github.com/igrr/mkspiffs/releases/download/0.1.2/mkspiffs-0.1.2-windows.zip", 
              "checksum": "SHA-256:0a29119b8458b61a877408f7995e4944623a712e0d313a2c2f76af9ab55cc9f2", 
              "host": "i686-mingw32", 
              "archiveFileName": "mkspiffs-0.1.2-windows.zip", 
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            }, 
            {
              "url": "https://github.com/igrr/mkspiffs/releases/download/0.1.2/mkspiffs-0.1.2-osx.tar.gz", 
              "checksum": "SHA-256:df656fae21a41c1269ea50cb53752dcaf6a4e1437255f3a9fb50b4025549b58e", 
              "host": "x86_64-apple-darwin", 
              "archiveFileName": "mkspiffs-0.1.2-osx.tar.gz", 
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            }, 
            {
              "url": "https://github.com/igrr/mkspiffs/releases/download/0.1.2/mkspiffs-0.1.2-osx.tar.gz", 
              "checksum": "SHA-256:df656fae21a41c1269ea50cb53752dcaf6a4e1437255f3a9fb50b4025549b58e", 
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            }, 
            {
              "url": "https://github.com/igrr/mkspiffs/releases/download/0.1.2/mkspiffs-0.1.2-linux64.tar.gz", 
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            }, 
            {
              "url": "https://github.com/igrr/mkspiffs/releases/download/0.1.2/mkspiffs-0.1.2-linux32.tar.gz", 
              "checksum": "SHA-256:e990d545dfcae308aabaac5fa9e1db734cc2b08167969e7eedac88bd0839667c", 
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      "name": "esp8266"
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          "archiveFileName":"sparkfun-nrf5-hardware-0.2.3.tar.bz2",
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