CI failure: undefined: types.Alias/types.Unalias

[ldez]

Currently the CI fails because:

#8 13.55 internal/xtypes/xtypes.go:224:14: undefined: types.Alias
#8 13.55 internal/xtypes/xtypes.go:226:30: undefined: types.Unalias

types.Alias and types.Unalias have been introduced in go1.22.

The current min version inside the go.mod is go1.19

go-ruleguard/go.mod

Line 3 in 0fe6f58

go 1.19

The version used inside tests is go1.18

go-ruleguard/_test/install/gitclone/Dockerfile

Line 1 in 0fe6f58

FROM golang:1.18-alpine AS build

go-ruleguard/_test/install/binary_gopath/Dockerfile

Line 1 in 0fe6f58

FROM golang:1.18-alpine AS build

go-ruleguard/_test/install/binary_nogopath/Dockerfile

Line 1 in 0fe6f58

FROM golang:1.18-alpine AS build

go-ruleguard/_test/install/gitclone_nobuildtag/Dockerfile

Line 1 in 0fe6f58

FROM golang:1.18-alpine AS build

go-ruleguard/_test/install/gitclone_toolsgo/Dockerfile

Line 1 in 0fe6f58

FROM golang:1.18-alpine AS build

And the tests use GO111MODULE=off

go-ruleguard/_test/install/gitclone/test.bash

Line 31 in 0fe6f58

export GO111MODULE=off

go-ruleguard/_test/install/binary_nogopath/test.bash

Line 30 in 0fe6f58

export GO111MODULE=off

There are several solutions that need to be discussed to fix the problem:

• use build tags and split internal/xtypes/xtypes.go
• update the min version to go1.22 (but it requires to remove/fix GO111MODULE=off tests)

[quasilyte]

Updating the min version sounds like an easier way around the problem.