An opinionated golangci-lint config (right version™)

golangci.yaml

# $ golangci-lint run --config=~/.golangci.yml ./... > lint.txt

run:
  # default concurrency is a available CPU number
  concurrency: 4

  # timeout for analysis, e.g. 30s, 5m, default is 1m
  timeout: 10m

  # exit code when at least one issue was found, default is 1
  issues-exit-code: 1

  # include test files or not, default is true
  tests: true

  # list of build tags, all linters use it. Default is empty list.
  # build-tags:
  #   - mytag

  # which dirs to skip: issues from them won't be reported;
  # can use regexp here: generated.*, regexp is applied on full path;
  # default value is empty list, but default dirs are skipped independently
  # from this option's value (see skip-dirs-use-default).
  # "/" will be replaced by current OS file path separator to properly work
  # on Windows.
  # skip-dirs:
  #   - src/external_libs
  #   - autogenerated_by_my_lib

  # default is true. Enables skipping of directories:
  #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
  skip-dirs-use-default: true

  # which files to skip: they will be analyzed, but issues from them
  # won't be reported. Default value is empty list, but there is
  # no need to include all autogenerated files, we confidently recognize
  # autogenerated files. If it's not please let us know.
  # "/" will be replaced by current OS file path separator to properly work
  # on Windows.
  # skip-files:
  #   - ".*\\.my\\.go$"
    # - lib/bad.go

  # by default isn't set. If set we pass it to "go list -mod={option}". From "go help modules":
  # If invoked with -mod=readonly, the go command is disallowed from the implicit
  # automatic updating of go.mod described above. Instead, it fails when any changes
  # to go.mod are needed. This setting is most useful to check that go.mod does
  # not need updates, such as in a continuous integration and testing system.
  # If invoked with -mod=vendor, the go command assumes that the vendor
  # directory holds the correct copies of dependencies and ignores
  # the dependency descriptions in go.mod.
  # modules-download-mode: readonly|vendor|mod

  # Allow multiple parallel golangci-lint instances running.
  # If false (default) - golangci-lint acquires file lock on start.
  allow-parallel-runners: false

linters:
  enable:
    # Enabled by default linters:
    - deadcode # : Finds unused code [fast: false, auto-fix: false]
    - errcheck # : Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases [fast: false, auto-fix: false]
    - gosimple #  (megacheck): Linter for Go source code that specializes in simplifying a code [fast: false, auto-fix: false]
    - govet #  (vet, vetshadow): Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string [fast: false, auto-fix: false]
    - ineffassign # : Detects when assignments to existing variables are not used [fast: true, auto-fix: false]
    - staticcheck #  (megacheck): Staticcheck is a go vet on steroids, applying a ton of static analysis checks [fast: false, auto-fix: false]
    - structcheck # : Finds unused struct fields [fast: false, auto-fix: false]
    - typecheck # : Like the front-end of a Go compiler, parses and type-checks Go code [fast: false, auto-fix: false]
    - unused #  (megacheck): Checks Go code for unused constants, variables, functions and types [fast: false, auto-fix: false]
    - varcheck # : Finds unused global variables and constants [fast: false, auto-fix: false]

    # Disabled by default linters:
    - asciicheck # : Simple linter to check that your code does not contain non-ASCII identifiers [fast: true, auto-fix: false]
    - bodyclose # : checks whether HTTP response body is closed successfully [fast: false, auto-fix: false]
    - contextcheck #: check the function whether use a non-inherited context [fast: false, auto-fix: false]
    - durationcheck # : check for two durations multiplied together [fast: false, auto-fix: false]
    - exhaustive # : check exhaustiveness of enum switch statements [fast: false, auto-fix: false]
    - exportloopref # : checks for pointers to enclosing loop variables [fast: false, auto-fix: false]
    - forcetypeassert # : finds forced type assertions [fast: true, auto-fix: false]
    - goconst # : Finds repeated strings that could be replaced by a constant [fast: true, auto-fix: false]
    - gocritic # : Provides many diagnostics that check for bugs, performance and style issues. [fast: false, auto-fix: false]
    - godot # : Check if comments end in a period [fast: true, auto-fix: true]
    - gofmt # : Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification [fast: true, auto-fix: true]
    - gofumpt # : Gofumpt checks whether code was gofumpt-ed. [fast: true, auto-fix: true]
    - goimports # : In addition to fixing imports, goimports also formats your code in the same style as gofmt. [fast: true, auto-fix: true]
    - golint # : Golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes [fast: false, auto-fix: false]
    - gomnd # : An analyzer to detect magic numbers. [fast: true, auto-fix: false]
    - gosec #  (gas): Inspects source code for security problems [fast: false, auto-fix: false]
    - importas # : Enforces consistent import aliases [fast: false, auto-fix: false]
    - interfacer # : Linter that suggests narrower interface types [fast: false, auto-fix: false]
    - makezero # : Finds slice declarations with non-zero initial length [fast: false, auto-fix: false]
    - misspell # : Finds commonly misspelled English words in comments [fast: true, auto-fix: true]
    - nakedret # : Finds naked returns in functions greater than a specified function length [fast: true, auto-fix: false]
    - nestif # : Reports deeply nested if statements [fast: true, auto-fix: false]
    - nilerr # : Finds the code that returns nil even if it checks that the error is not nil. [fast: false, auto-fix: false]
    - noctx # : noctx finds sending http request without context.Context [fast: false, auto-fix: false]
    - nolintlint # : Reports ill-formed or insufficient nolint directives [fast: true, auto-fix: false]
    - prealloc # : Finds slice declarations that could potentially be preallocated [fast: true, auto-fix: false]
    - predeclared # : find code that shadows one of Go's predeclared identifiers [fast: true, auto-fix: false]
    - promlinter # : Check Prometheus metrics naming via promlint [fast: true, auto-fix: false]
    - revive # : Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint. [fast: false, auto-fix: false]
    - rowserrcheck # : checks whether Err of rows is checked successfully [fast: false, auto-fix: false]
    - sqlclosecheck # : Checks that sql.Rows and sql.Stmt are closed. [fast: false, auto-fix: false]
    - stylecheck # : Stylecheck is a replacement for golint [fast: false, auto-fix: false]
    - unconvert # : Remove unnecessary type conversions [fast: false, auto-fix: false]
    - unparam # : Reports unused function parameters [fast: false, auto-fix: false]
    - wastedassign # : wastedassign finds wasted assignment statements. [fast: false, auto-fix: false]
  disable:
    # Disabled by default linters:
    - cyclop # : checks function and package cyclomatic complexity [fast: false, auto-fix: false]
    - depguard # : Go linter that checks if package imports are in a list of acceptable packages [fast: false, auto-fix: false]
    - dogsled # : Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f()) [fast: true, auto-fix: false]
    - dupl # : Tool for code clone detection [fast: true, auto-fix: false]
    - errname # : Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`. [fast: false, auto-fix: false]
    - errorlint # : errorlint is a linter for that can be used to find code that will cause problems with the error wrapping scheme introduced in Go 1.13. [fast: false, auto-fix: false]
    - exhaustivestruct # : Checks if all struct's fields are initialized [fast: false, auto-fix: false]
    - forbidigo # : Forbids identifiers [fast: true, auto-fix: false]
    - funlen # : Tool for detection of long functions [fast: true, auto-fix: false]
    - gci # : Gci control golang package import order and make it always deterministic. [fast: true, auto-fix: true]
    - gochecknoglobals # : check that no global variables exist [fast: true, auto-fix: false]
    - gochecknoinits # : Checks that no init functions are present in Go code [fast: true, auto-fix: false]
    - gocognit # : Computes and checks the cognitive complexity of functions [fast: true, auto-fix: false]
    - gocyclo # : Computes and checks the cyclomatic complexity of functions [fast: true, auto-fix: false]
    - godox # : Tool for detection of FIXME, TODO and other comment keywords [fast: true, auto-fix: false]
    - goerr113 # : Golang linter to check the errors handling expressions [fast: false, auto-fix: false]
    - goheader # : Checks is file header matches to pattern [fast: true, auto-fix: false]
    - gomoddirectives # : Manage the use of 'replace', 'retract', and 'excludes' directives in go.mod. [fast: true, auto-fix: false]
    - gomodguard # : Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations. [fast: true, auto-fix: false]
    - goprintffuncname # : Checks that printf-like functions are named with `f` at the end [fast: true, auto-fix: false]
    - ifshort # : Checks that your code uses short syntax for if-statements whenever possible [fast: true, auto-fix: false]
    - lll # : Reports long lines [fast: true, auto-fix: false]
    - maligned # : Tool to detect Go structs that would take less memory if their fields were sorted [fast: false, auto-fix: false]
    - nlreturn # : nlreturn checks for a new line before return and branch statements to increase code clarity [fast: true, auto-fix: false]
    - paralleltest # : paralleltest detects missing usage of t.Parallel() method in your Go test [fast: true, auto-fix: false]
    - scopelint # : Scopelint checks for unpinned variables in go programs [fast: true, auto-fix: false]
    - tagliatelle # : Checks the struct tags. [fast: true, auto-fix: false]
    - tenv #: tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17 [fast: false, auto-fix: false]
    - testpackage # : linter that makes you use a separate _test package [fast: true, auto-fix: false]
    - thelper # : thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers [fast: false, auto-fix: false]
    - tparallel # : tparallel detects inappropriate usage of t.Parallel() method in your Go test codes [fast: false, auto-fix: false]
    - varnamelen #: checks that the length of a variable's name matches its scope [fast: false, auto-fix: false]
    - whitespace # : Tool for detection of leading and trailing whitespace [fast: true, auto-fix: true]
    - wrapcheck # : Checks that errors returned from external packages are wrapped [fast: false, auto-fix: false]
    - wsl # : Whitespace Linter - Forces you to use empty lines! [fast: true, auto-fix: false]

# output configuration options
output:
  # colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
  # default is "colored-line-number"
  format: line-number

  # print lines of code with issue, default is true
  print-issued-lines: false

  # print linter name in the end of issue text, default is true
  print-linter-name: true

  # make issues output unique by line, default is true
  # uniq-by-line: true

  # add a prefix to the output file references; default is no prefix
  # path-prefix: ""

  # sorts results by: filepath, line and column
  sort-results: false

# all available settings of specific linters
linters-settings:
  gocritic:
    # Enable multiple checks by tags, run `GL_DEBUG=gocritic golangci-lint run` to see all tags and checks.
    # Empty list by default. See https://github.com/go-critic/go-critic#usage -> section "Tags".
    enabled-tags:
      - diagnostic
      - experimental
      - opinionated
      - performance
      - style

ERRO Can't read config: can't read viper config: While parsing config: yaml: line 55: did not find expected key

Hm, wut? golangci-lint run --config=~/.golangci.yaml works fine 👀

Strange, but after I lint the code all works like sharm (i download the source file of course)...

Also, on golangci-lint has version 1.42.1 built from 54f4301 on 2021-09-04T14:39:09Z there few warnings:

WARN [runner] The linter 'golint' is deprecated (since v1.41.0) due to: The repository of the linter has been archived by the owner.  Replaced by revive. 
WARN [runner] The linter 'scopelint' is deprecated (since v1.39.0) due to: The repository of the linter has been deprecated by the owner.  Replaced by exportloopref. 
WARN [runner] The linter 'interfacer' is deprecated (since v1.38.0) due to: The repository of the linter has been archived by the owner.  

PS Thanks for sharing!

Ah, ok

• interfacer <...> archived by the owner. - but still works!
• golint <...> archived by the owner. - but still works!
• scopelint <...> archived by the owner. Replaced by exportloopref. - still works but can be replaced, thanks.

(Have updated the file)