[v2] Failed executing command with error: can't load config: gofmt is a formatter

[yurishkuro]

Welcome

• Yes, I'm using a binary release within 2 latest releases. Only such installations are supported.
• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've read the typecheck section of the FAQ.
• Yes, I've tried with the standalone linter if available (e.g., gocritic, go vet, etc.).
• I agree to follow this project's Code of Conduct

How did you install golangci-lint?

go install

Description of the problem

Trying to upgrade to v2 and it fails on the existing config. I have these previously valid linters in the config:

    - gofmt
    - gofumpt
    - goimports

Version of golangci-lint

$ golangci-lint --version
golangci-lint has version v2.0.0 built with go1.24.1 from (unknown, modified: ?, mod sum: "h1:RQWk8VCuMQv9bBDy3x23yds2yf9aRZ86C9MWGIdNRuU=") on (unknown)

Configuration

issues:
  # Excluding configuration per-path, per-linter, per-text and per-source
  exclude-rules:
    # Exclude some linters from running on tests files.
    - path: _test\.go
      linters: [gosec, bodyclose, noctx]
    - linters: [gocritic]
      text: "dupArg"
    - linters: [gocritic]
      text: "exitAfterDefer"
    - linters: [gocritic]
      text: "appendAssign"

  exclude-dirs-use-default: false
  exclude-files:
    - ".*.pb.go$"
    - "proto-gen/.*"
    - "model/v1/prototest/.*"

  max-issues-per-linter: 0
  max-same-issues: 0

linters:
  disable:
    - errcheck
  enable:
    # Plain ASCII identifiers.
    - asciicheck

    # Checks for dangerous unicode character sequences.
    - bidichk

    # Checks whether HTTP response body is closed successfully.
    # TODO enable this but maybe find a way to disable in tests.
    - bodyclose

    # Check whether the function uses a non-inherited context.
    - contextcheck

    # Check declaration order of types, consts, vars and funcs.
    - decorder

    # Checks if package imports are in a list of acceptable packages (see cfg below).
    - depguard

    # Check for two durations multiplied together.
    - durationcheck

    # Checks `Err-` prefix for var and `-Error` suffix for error type.
    - errname

    # Suggests to use `%w` for error-wrapping.
    - errorlint

    # Checks for pointers to enclosing loop variables.
    - copyloopvar

    - gocritic
    - gofmt
    - gofumpt
    - goimports

    # Allow or ban replace directives in go.mod
    # or force explanation for retract directives.
    # Maybe enable once we get rid of old sarama.
    # - gomoddirectives

    - gosec

    # Linter that specializes in simplifying code.
    - gosimple
    - govet

    # Detects when assignments to existing variables are not used.
    - ineffassign

    - misspell

    # Finds naked/bare returns and requires change them.
    - nakedret

    # Require a bit more explicit returns.
    - nilerr

    # Finds sending HTTP request without context.Context.
    - noctx

    # Reports ill-formed or insufficient nolint directives.
    - nolintlint

    # Checks that fmt.Sprintf can be replaced with a faster alternative.
    - perfsprint

    # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
    - revive

    # Checks usage of github.com/stretchr/testify.
    - testifylint

    # Detects the possibility to use variables/constants from the Go standard library.
    - usestdlibvars

    # TODO consider adding more linters, cf. https://olegk.dev/go-linters-configuration-the-right-version

linters-settings:
  depguard:
    rules:
      main:
        files: ["$all"]
        allow:
          - "$gostd"
          - "github.com/stretchr/testify"
          - "github.com/gogo/protobuf"
          - "github.com/jaegertracing/jaeger-idl"
          - "go.uber.org/goleak"

run:
  go: "1.23"
  timeout: 20m

Go environment

$ go version && go env
go version go1.24.1 darwin/arm64

Verbose output of running

$ golangci-lint cache clean
$ golangci-lint run -v
INFO golangci-lint has version v2.0.0 built with go1.24.1 from (unknown, modified: ?, mod sum: "h1:RQWk8VCuMQv9bBDy3x23yds2yf9aRZ86C9MWGIdNRuU=") on (unknown) 
INFO [config_reader] Config search paths: [./ /Users/ysh/dev/jaegertracing/jaeger-idl /Users/ysh/dev/jaegertracing /Users/ysh/dev /Users/ysh /Users /] 
INFO [config_reader] Used config file .golangci.yaml 
Error: can't load config: gofmt is a formatter
Failed executing command with error: can't load config: gofmt is a formatter

A minimal reproducible example or link to a public repository

jaegertracing/jaeger-idl#160

Validation

• Yes, I've included all information above (version, config, etc.).

Supporter

• I am a sponsor/backer through GitHub or OpenCollective

[boring-cyborg]

Hey, thank you for opening your first Issue ! 🙂 If you would like to contribute we have a guide for contributors.

[ldez]

Hello,

The configuration has changed: https://golangci-lint.run/product/migration-guide/#linters-settings

I recommend using the migration command: https://golangci-lint.run/product/migration-guide/#command-migrate

[yurishkuro]

Thanks, I'll check it out. If the linter can auto-detect v1 config it would be nice if it would print these links, rather than a cryptic error message.

[ldez]

The v1 (v1.64.8) detects the v2 configuration.

And v2 detects the v1 configuration, I need to check something.

[julieta-311]

I got the same error, I had no config file while using v1, golangci-lint migrate returned a warning (WARN No config file detected) and did nothing. I was running it via golangci-lint run --no-config ./... but now I manually created a .golangci.yaml config file and that resolved it.

[ldez]

The v2 validation was not in the right position: #5599

[ldez]

@julieta-311 can you create a dedicated issue?