Hi,
I was able to build pixlet on a raspberry pi. I did it using docker, I didn’t want to install Go on the raspberry, but should work the same.
Steps to build Pixlet (you need Go installed):
$ apt update; apt install git libwebp-dev -y
$ git clone https://github.com/tidbyt/pixlet.git
$ cd pixlet
$ go get ./...
$ go build
$ file pixlet
pixlet: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 3.2.0, Go BuildID=L3SCqJY0UVob0DlCsab-/JlBN1p2CjnW7_tJp8Oed/kcojjphELWPIAAwwbtPA/BVl4n6uRF2oPpfNGuL_a, BuildID[sha1]=1b1b26f571888886a3ac1c12d0880b75728c9ed9, not stripped
I hope that helps.