Gopls: Settings

This document describes gopls' configuration settings.

Gopls settings are defined by a JSON object whose valid fields are described below. These fields are gopls-specific, and generic LSP clients have no knowledge of them.

Different clients present configuration settings in their user interfaces in a wide variety of ways. For example, some expect the user to edit the raw JSON object while others use a data structure in the editor's configuration language; still others (such as VS Code) have a graphical configuration system. Be sure to consult the documentation for how to express configuration settings in your client. Some clients also permit settings to be configured differently for each workspace folder.

Any settings that are experimental or for debugging purposes are marked as such.

Build

buildFlags []string

buildFlags is the set of flags passed on to the build system when invoked. It is applied to queries like go list, which is used when discovering files. The most common use is to set -tags.

Default: [].

env map[string]string

env adds environment variables to external commands run by gopls, most notably go list.

Default: {}.

directoryFilters []string

directoryFilters can be used to exclude unwanted directories from the workspace. By default, all directories are included. Filters are an operator, + to include and - to exclude, followed by a path prefix relative to the workspace folder. They are evaluated in order, and the last filter that applies to a path controls whether it is included. The path prefix can be empty, so an initial - excludes everything.

DirectoryFilters also supports the ** operator to match 0 or more directories.

Examples:

Exclude node_modules at current depth: -node_modules

Exclude node_modules at any depth: -**/node_modules

Include only project_a: - (exclude everything), +project_a

Include only project_a, but not node_modules inside it: -, +project_a, -project_a/node_modules

Default: ["-**/node_modules"].

templateExtensions []string

templateExtensions gives the extensions of file names that are treated as template files. (The extension is the part of the file name after the final dot.)

Default: [].

memoryMode string

This setting is experimental and may be deleted.

obsolete, no effect

Default: "".

expandWorkspaceToModule bool

This setting is experimental and may be deleted.

expandWorkspaceToModule determines which packages are considered “workspace packages” when the workspace is using modules.

Workspace packages affect the scope of workspace-wide operations. Notably, gopls diagnoses all packages considered to be part of the workspace after every keystroke, so by setting “ExpandWorkspaceToModule” to false, and opening a nested workspace directory, you can reduce the amount of work gopls has to do to keep your workspace up to date.

Default: true.

allowImplicitNetworkAccess bool

This setting is experimental and may be deleted.

allowImplicitNetworkAccess disables GOPROXY=off, allowing implicit module downloads rather than requiring user action. This option will eventually be removed.

Default: false.

standaloneTags []string

standaloneTags specifies a set of build constraints that identify individual Go source files that make up the entire main package of an executable.

A common example of standalone main files is the convention of using the directive //go:build ignore to denote files that are not intended to be included in any package, for example because they are invoked directly by the developer using go run.

Gopls considers a file to be a standalone main file if and only if it has package name “main” and has a build directive of the exact form “//go:build tag” or “// +build tag”, where tag is among the list of tags configured by this setting. Notably, if the build constraint is more complicated than a simple tag (such as the composite constraint //go:build tag && go1.18), the file is not considered to be a standalone main file.

This setting is only supported when gopls is built with Go 1.16 or later.

Default: ["ignore"].

Formatting

local string

local is the equivalent of the goimports -local flag, which puts imports beginning with this string after third-party packages. It should be the prefix of the import path whose imports should be grouped separately.

It is used when tidying imports (during an LSP Organize Imports request) or when inserting new ones (for example, during completion); an LSP Formatting request merely sorts the existing imports.

Default: "".

gofumpt bool

gofumpt indicates if we should run gofumpt formatting.

Default: false.

UI

codelenses map[enum]bool

codelenses overrides the enabled/disabled state of each of gopls' sources of Code Lenses.

Example Usage:

"gopls": {
...
  "codelenses": {
    "generate": false,  // Don't show the `go generate` lens.
    "gc_details": true  // Show a code lens toggling the display of gc's choices.
  }
...
}

Default: {"gc_details":false,"generate":true,"regenerate_cgo":true,"run_govulncheck":false,"tidy":true,"upgrade_dependency":true,"vendor":true}.

semanticTokens bool

This setting is experimental and may be deleted.

semanticTokens controls whether the LSP server will send semantic tokens to the client.

Default: false.

noSemanticString bool

This setting is experimental and may be deleted.

noSemanticString turns off the sending of the semantic token ‘string’

Default: false.

noSemanticNumber bool

This setting is experimental and may be deleted.

noSemanticNumber turns off the sending of the semantic token ‘number’

Default: false.

Completion

usePlaceholders bool

placeholders enables placeholders for function parameters or struct fields in completion responses.

Default: false.

completionBudget time.Duration

This setting is for debugging purposes only.

completionBudget is the soft latency goal for completion requests. Most requests finish in a couple milliseconds, but in some cases deep completions can take much longer. As we use up our budget we dynamically reduce the search scope to ensure we return timely results. Zero means unlimited.

Default: "100ms".

matcher enum

This is an advanced setting and should not be configured by most gopls users.

matcher sets the algorithm that is used when calculating completion candidates.

Must be one of:

  • "CaseInsensitive"
  • "CaseSensitive"
  • "Fuzzy"

Default: "Fuzzy".

experimentalPostfixCompletions bool

This setting is experimental and may be deleted.

experimentalPostfixCompletions enables artificial method snippets such as “someSlice.sort!”.

Default: true.

completeFunctionCalls bool

completeFunctionCalls enables function call completion.

When completing a statement, or when a function return type matches the expected of the expression being completed, completion may suggest call expressions (i.e. may include parentheses).

Default: true.

Diagnostic

analyses map[string]bool

analyses specify analyses that the user would like to enable or disable. A map of the names of analysis passes that should be enabled/disabled. A full list of analyzers that gopls uses can be found in analyzers.md.

Example Usage:

...
"analyses": {
  "unreachable": false, // Disable the unreachable analyzer.
  "unusedvariable": true  // Enable the unusedvariable analyzer.
}
...

Default: {}.

staticcheck bool

This setting is experimental and may be deleted.

staticcheck enables additional analyses from staticcheck.io. These analyses are documented on Staticcheck's website.

Default: false.

annotations map[enum]bool

This setting is experimental and may be deleted.

annotations specifies the various kinds of optimization diagnostics that should be reported by the gc_details command.

Each enum must be one of:

  • "bounds" controls bounds checking diagnostics.
  • "escape" controls diagnostics about escape choices.
  • "inline" controls diagnostics about inlining choices.
  • "nil" controls nil checks.

Default: {"bounds":true,"escape":true,"inline":true,"nil":true}.

vulncheck enum

This setting is experimental and may be deleted.

vulncheck enables vulnerability scanning.

Must be one of:

  • "Imports": In Imports mode, gopls will report vulnerabilities that affect packages directly and indirectly used by the analyzed main module.
  • "Off": Disable vulnerability analysis.

Default: "Off".

diagnosticsDelay time.Duration

This is an advanced setting and should not be configured by most gopls users.

diagnosticsDelay controls the amount of time that gopls waits after the most recent file modification before computing deep diagnostics. Simple diagnostics (parsing and type-checking) are always run immediately on recently modified packages.

This option must be set to a valid duration string, for example "250ms".

Default: "1s".

diagnosticsTrigger enum

This setting is experimental and may be deleted.

diagnosticsTrigger controls when to run diagnostics.

Must be one of:

  • "Edit": Trigger diagnostics on file edit and save. (default)
  • "Save": Trigger diagnostics only on file save. Events like initial workspace load or configuration change will still trigger diagnostics.

Default: "Edit".

analysisProgressReporting bool

analysisProgressReporting controls whether gopls sends progress notifications when construction of its index of analysis facts is taking a long time. Cancelling these notifications will cancel the indexing task, though it will restart after the next change in the workspace.

When a package is opened for the first time and heavyweight analyses such as staticcheck are enabled, it can take a while to construct the index of analysis facts for all its dependencies. The index is cached in the filesystem, so subsequent analysis should be faster.

Default: true.

Documentation

hoverKind enum

hoverKind controls the information that appears in the hover text. SingleLine and Structured are intended for use only by authors of editor plugins.

Must be one of:

  • "FullDocumentation"
  • "NoDocumentation"
  • "SingleLine"
  • "Structured" is an experimental setting that returns a structured hover format. This format separates the signature from the documentation, so that the client can do more manipulation of these fields.
    This should only be used by clients that support this behavior.
  • "SynopsisDocumentation"

Default: "FullDocumentation".

linkTarget string

linkTarget is the base URL for links to Go package documentation returned by LSP operations such as Hover and DocumentLinks and in the CodeDescription field of each Diagnostic.

It might be one of:

  • "godoc.org"
  • "pkg.go.dev"

If company chooses to use its own godoc.org, its address can be used as well.

Modules matching the GOPRIVATE environment variable will not have documentation links in hover.

Default: "pkg.go.dev".

linksInHover enum

linksInHover controls the presence of documentation links in hover markdown.

Must be one of:

  • false: do not show links
  • true: show links to the linkTarget domain
  • "gopls": show links to gopls' internal documentation viewer

Default: true.

Inlayhint

hints map[enum]bool

This setting is experimental and may be deleted.

hints specify inlay hints that users want to see. A full list of hints that gopls uses can be found in inlayHints.md.

Default: {}.

Navigation

importShortcut enum

importShortcut specifies whether import statements should link to documentation or go to definitions.

Must be one of:

  • "Both"
  • "Definition"
  • "Link"

Default: "Both".

symbolMatcher enum

This is an advanced setting and should not be configured by most gopls users.

symbolMatcher sets the algorithm that is used when finding workspace symbols.

Must be one of:

  • "CaseInsensitive"
  • "CaseSensitive"
  • "FastFuzzy"
  • "Fuzzy"

Default: "FastFuzzy".

symbolStyle enum

This is an advanced setting and should not be configured by most gopls users.

symbolStyle controls how symbols are qualified in symbol responses.

Example Usage:

"gopls": {
...
  "symbolStyle": "Dynamic",
...
}

Must be one of:

  • "Dynamic" uses whichever qualifier results in the highest scoring match for the given symbol query. Here a “qualifier” is any “/” or “.” delimited suffix of the fully qualified symbol. i.e. “to/pkg.Foo.Field” or just “Foo.Field”.
  • "Full" is fully qualified symbols, i.e. “path/to/pkg.Foo.Field”.
  • "Package" is package qualified symbols i.e. “pkg.Foo.Field”.

Default: "Dynamic".

symbolScope enum

symbolScope controls which packages are searched for workspace/symbol requests. When the scope is “workspace”, gopls searches only workspace packages. When the scope is “all”, gopls searches all loaded packages, including dependencies and the standard library.

Must be one of:

  • "all" matches symbols in any loaded package, including dependencies.
  • "workspace" matches symbols in workspace packages only.

Default: "all".

verboseOutput bool

This setting is for debugging purposes only.

verboseOutput enables additional debug logging.

Default: false.