The highest tagged major version is v2.

hcl/

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Path	Synopsis
ast Package ast declares the types used to represent syntax trees for HCL (HashiCorp Configuration Language)	Package ast declares the types used to represent syntax trees for HCL (HashiCorp Configuration Language)
fmtcmd
parser Package parser implements a parser for HCL (HashiCorp Configuration Language)	Package parser implements a parser for HCL (HashiCorp Configuration Language)
printer Package printer implements printing of AST nodes to HCL format.	Package printer implements printing of AST nodes to HCL format.
scanner Package scanner implements a scanner for HCL (HashiCorp Configuration Language) source text.	Package scanner implements a scanner for HCL (HashiCorp Configuration Language) source text.
strconv
token Package token defines constants representing the lexical tokens for HCL (HashiCorp Configuration Language)	Package token defines constants representing the lexical tokens for HCL (HashiCorp Configuration Language)