Support GitHub Enterprise for the pull-requests feature

The branches-panel PR icons only worked for github.com remotes. There was no
fundamental reason — the auth library we already vendor (cli/go-gh) supports
enterprise tokens out of the box (GH_ENTERPRISE_TOKEN, gh auth's keyring),
and the user-facing 'services' config has long been the documented way to
tell lazygit "this domain is a github service" for the View-PR-URL feature.

The fetcher just hardcoded github.com in three places:
- a substring check on the remote URL to decide we're "in a github repo",
- the GraphQL endpoint (always api.github.com/graphql), and
- the auth lookup (always against the default host).

Plumb the resolved web domain through instead. Detection now goes through
the hosting_service ("is this remote's provider 'github'?"), which means a
user with services: { 'git.acme.com': 'github:git.acme.com' } configured
gets PR icons on their GHE remotes too.

Replacing the substring check with a provider check also tightens a latent
bug in getGithubRemotes: it previously accepted any remote whose URL parsed
with the default regex, including gitlab and bitbucket — masked today only
by the InGithubRepo gate, but exposed once the gate goes away.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

pkg/commands/git_commands/github.go

@@ -138,19 +138,16 @@ func fetchPullRequestsQuery(branches []string, owner string, repo string) (strin
 	return queryString, variables
 }
 
-func (self *GitHubCommands) GetAuthToken() string {
-	defaultHost, _ := auth.DefaultHost()
-	token, _ := auth.TokenForHost(defaultHost)
+func (self *GitHubCommands) GetAuthToken(host string) string {
+	token, _ := auth.TokenForHost(host)
 	return token
 }
 
-// FetchRecentPRs fetches recent pull requests using GraphQL.
-func (self *GitHubCommands) FetchRecentPRs(branches []string, baseRemote *models.Remote, token string) ([]*models.GithubPullRequest, error) {
-	repoOwner, repoName, err := self.GetBaseRepoOwnerAndName(baseRemote)
-	if err != nil {
-		return nil, err
-	}
-
+// FetchRecentPRs fetches recent pull requests using GraphQL. serviceInfo
+// identifies the GitHub instance (github.com or a GitHub Enterprise Server)
+// and the owner/repo to query against.
+func (self *GitHubCommands) FetchRecentPRs(branches []string, serviceInfo *hosting_service.ServiceInfo, token string) ([]*models.GithubPullRequest, error) {
+	endpoint := graphQLEndpoint(serviceInfo.WebDomain)
 	t := time.Now()
 
 	var g errgroup.Group
@@ -171,7 +168,7 @@ func (self *GitHubCommands) FetchRecentPRs(branches []string, baseRemote *models
 
 		// Launch a goroutine for each chunk of branches
 		g.Go(func() error {
-			prs, err := self.fetchRecentPRsAux(repoOwner, repoName, branchChunk, token)
+			prs, err := self.fetchRecentPRsAux(endpoint, serviceInfo.Owner, serviceInfo.Repository, branchChunk, token)
 			if err != nil {
 				return err
 			}
@@ -181,7 +178,7 @@ func (self *GitHubCommands) FetchRecentPRs(branches []string, baseRemote *models
 	}
 
 	// Wait for all goroutines, then close the channel so the range loop exits
-	err = g.Wait()
+	err := g.Wait()
 	close(results)
 	if err != nil {
 		return nil, err
@@ -198,14 +195,14 @@ func (self *GitHubCommands) FetchRecentPRs(branches []string, baseRemote *models
 	return allPRs, nil
 }
 
-func (self *GitHubCommands) fetchRecentPRsAux(repoOwner string, repoName string, branches []string, token string) ([]*models.GithubPullRequest, error) {
+func (self *GitHubCommands) fetchRecentPRsAux(endpoint string, repoOwner string, repoName string, branches []string, token string) ([]*models.GithubPullRequest, error) {
 	queryString, variables := fetchPullRequestsQuery(branches, repoOwner, repoName)
 
 	bodyBytes, err := json.Marshal(graphQLRequest{Query: queryString, Variables: variables})
 	if err != nil {
 		return nil, err
 	}
-	req, err := http.NewRequest("POST", "https://api.github.com/graphql", bytes.NewBuffer(bodyBytes))
+	req, err := http.NewRequest("POST", endpoint, bytes.NewBuffer(bodyBytes))
 	if err != nil {
 		return nil, err
 	}
@@ -336,6 +333,16 @@ func getRemotesToOwnersMap(remotes []*models.Remote) map[string]string {
 	return res
 }
 
+// graphQLEndpoint returns the GraphQL API URL for a GitHub host. github.com
+// uses a dedicated api. subdomain; GitHub Enterprise Server hangs the API off
+// the web host under /api/graphql.
+func graphQLEndpoint(host string) string {
+	if auth.NormalizeHostname(host) == "github.com" {
+		return "https://api.github.com/graphql"
+	}
+	return "https://" + host + "/api/graphql"
+}
+
 func (self *GitHubCommands) InGithubRepo(remotes []*models.Remote) bool {
 	if len(remotes) == 0 {
 		return false

pkg/commands/git_commands/github_test.go

@@ -57,6 +57,25 @@ func TestGetRepoInfoFromURL(t *testing.T) {
 	}
 }
 
+func TestGraphQLEndpoint(t *testing.T) {
+	cases := []struct {
+		host     string
+		expected string
+	}{
+		{"github.com", "https://api.github.com/graphql"},
+		{"www.github.com", "https://api.github.com/graphql"},
+		{"GITHUB.com", "https://api.github.com/graphql"},
+		{"ghe.example.com", "https://ghe.example.com/api/graphql"},
+		{"ghe.example.com:8443", "https://ghe.example.com:8443/api/graphql"},
+	}
+
+	for _, c := range cases {
+		t.Run(c.host, func(t *testing.T) {
+			assert.Equal(t, c.expected, graphQLEndpoint(c.host))
+		})
+	}
+}
+
 func TestGenerateGithubPullRequestMap(t *testing.T) {
 	cases := []struct {
 		name     string

pkg/gui/controllers/helpers/refresh_helper.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/jesseduffield/generics/set"
 	"github.com/jesseduffield/lazygit/pkg/commands/git_commands"
+	"github.com/jesseduffield/lazygit/pkg/commands/hosting_service"
 	"github.com/jesseduffield/lazygit/pkg/commands/models"
 	"github.com/jesseduffield/lazygit/pkg/config"
 	"github.com/jesseduffield/lazygit/pkg/gocui"
@@ -812,39 +813,33 @@ func (self *RefreshHelper) refreshGithubPullRequests() {
 	self.c.Mutexes().RefreshingPullRequestsMutex.Lock()
 	defer self.c.Mutexes().RefreshingPullRequestsMutex.Unlock()
 
-	if !self.c.Git().GitHub.InGithubRepo(self.c.Model().Remotes) {
+	githubRemotes := getAuthenticatedGithubRemotes(self.getGithubRemotes(), self.c.Git().GitHub.GetAuthToken)
+	if len(githubRemotes) == 0 {
 		self.c.Model().PullRequests = nil
 		self.c.Model().PullRequestsMap = nil
 		return
 	}
 
-	authToken := self.c.Git().GitHub.GetAuthToken()
-	if authToken == "" {
-		self.c.Model().PullRequests = nil
-		self.c.Model().PullRequestsMap = nil
-		return
-	}
-
-	githubRemotes := self.getGithubRemotes()
-	baseRemote := getGithubBaseRemote(githubRemotes, self.c.Git().GitHub.ConfiguredBaseRemoteName())
-	if baseRemote == nil {
+	baseInfo := getGithubBaseRemote(githubRemotes, self.c.Git().GitHub.ConfiguredBaseRemoteName())
+	if baseInfo == nil {
 		self.c.Model().PullRequests = nil
 		self.c.Model().PullRequestsMap = nil
 
-		if len(githubRemotes) > 0 && !self.githubBaseRemotePromptDismissed[self.c.Git().RepoPaths.RepoPath()] {
-			self.promptForBaseGithubRepo(authToken, githubRemotes)
+		if !self.githubBaseRemotePromptDismissed[self.c.Git().RepoPaths.RepoPath()] {
+			self.promptForBaseGithubRepo(githubRemotes)
 		}
 		return
 	}
 
-	if err := self.setGithubPullRequests(authToken, baseRemote); err != nil {
+	if err := self.setGithubPullRequests(baseInfo); err != nil {
 		self.c.LogAction(fmt.Sprintf("Error fetching pull requests from GitHub: %s", err.Error()))
 	}
 }
 
 type githubRemoteInfo struct {
-	remote   *models.Remote
-	repoName string
+	remote      *models.Remote
+	serviceInfo hosting_service.ServiceInfo
+	authToken   string
 }
 
 func (self *RefreshHelper) getGithubRemotes() []githubRemoteInfo {
@@ -852,23 +847,44 @@ func (self *RefreshHelper) getGithubRemotes() []githubRemoteInfo {
 		if len(remote.Urls) == 0 {
 			return githubRemoteInfo{}, false
 		}
-		repoName, err := self.c.Git().HostingService.GetRepoNameFromRemoteURL(remote.Urls[0])
-		if err != nil {
+		serviceInfo, err := self.c.Git().HostingService.GetServiceInfo(remote.Urls[0])
+		if err != nil || serviceInfo.Provider != "github" {
 			return githubRemoteInfo{}, false
 		}
-		return githubRemoteInfo{remote: remote, repoName: repoName}, true
+		return githubRemoteInfo{remote: remote, serviceInfo: serviceInfo}, true
 	})
 }
 
-func getGithubBaseRemote(githubRemotes []githubRemoteInfo, configuredRemoteName string) *models.Remote {
-	findRemoteByName := func(name string) *models.Remote {
+// getAuthenticatedGithubRemotes drops remotes for which no auth token is
+// available and attaches the resolved token to the rest. Token lookups are
+// cached by host so that multiple remotes pointing at the same instance
+// (e.g. origin + a fork on github.com) only trigger one lookup.
+func getAuthenticatedGithubRemotes(githubRemotes []githubRemoteInfo, getAuthToken func(host string) string) []githubRemoteInfo {
+	tokensByHost := map[string]string{}
+	return lo.FilterMap(githubRemotes, func(info githubRemoteInfo, _ int) (githubRemoteInfo, bool) {
+		host := info.serviceInfo.WebDomain
+		token, cached := tokensByHost[host]
+		if !cached {
+			token = getAuthToken(host)
+			tokensByHost[host] = token
+		}
+		if token == "" {
+			return githubRemoteInfo{}, false
+		}
+		info.authToken = token
+		return info, true
+	})
+}
+
+func getGithubBaseRemote(githubRemotes []githubRemoteInfo, configuredRemoteName string) *githubRemoteInfo {
+	findRemoteByName := func(name string) *githubRemoteInfo {
 		info, ok := lo.Find(githubRemotes, func(info githubRemoteInfo) bool {
 			return info.remote.Name == name
 		})
 		if !ok {
 			return nil
 		}
-		return info.remote
+		return &info
 	}
 
 	if configuredRemoteName != "" {
@@ -876,29 +892,29 @@ func getGithubBaseRemote(githubRemotes []githubRemoteInfo, configuredRemoteName
 	}
 
 	if len(githubRemotes) == 1 {
-		return githubRemotes[0].remote
+		return &githubRemotes[0]
 	}
 
 	// Not sure if "upstream" is really a common convention for the name of the remote that PRs are
 	// made against, but if it exists it's pretty likely to be the one we want.
-	if remote := findRemoteByName("upstream"); remote != nil {
-		return remote
+	if info := findRemoteByName("upstream"); info != nil {
+		return info
 	}
 
 	return nil
 }
 
-func (self *RefreshHelper) promptForBaseGithubRepo(authToken string, githubRemotes []githubRemoteInfo) {
+func (self *RefreshHelper) promptForBaseGithubRepo(githubRemotes []githubRemoteInfo) {
 	menuItems := lo.Map(githubRemotes, func(info githubRemoteInfo, _ int) *types.MenuItem {
 		return &types.MenuItem{
-			LabelColumns: []string{info.remote.Name, style.FgCyan.Sprint(info.repoName)},
+			LabelColumns: []string{info.remote.Name, style.FgCyan.Sprint(info.serviceInfo.RepoName)},
 			OnPress: func() error {
 				return self.c.WithWaitingStatus(self.c.Tr.FetchingPullRequests, func(gocui.Task) error {
 					if err := self.c.Git().GitHub.SetConfiguredBaseRemoteName(info.remote.Name); err != nil {
 						self.c.Log.Error(err)
 					}
 
-					if err := self.setGithubPullRequests(authToken, info.remote); err != nil {
+					if err := self.setGithubPullRequests(&info); err != nil {
 						self.c.LogAction(fmt.Sprintf("Error fetching pull requests from GitHub: %s", err.Error()))
 					}
 					return nil
@@ -928,7 +944,7 @@ func (self *RefreshHelper) rebuildPullRequestsMap() {
 	)
 }
 
-func (self *RefreshHelper) setGithubPullRequests(authToken string, baseRemote *models.Remote) error {
+func (self *RefreshHelper) setGithubPullRequests(baseInfo *githubRemoteInfo) error {
 	if len(self.c.Model().Branches) == 0 {
 		return nil
 	}
@@ -940,7 +956,7 @@ func (self *RefreshHelper) setGithubPullRequests(authToken string, baseRemote *m
 		return branch.UpstreamBranch
 	})
 
-	prs, err := self.c.Git().GitHub.FetchRecentPRs(branchNames, baseRemote, authToken)
+	prs, err := self.c.Git().GitHub.FetchRecentPRs(branchNames, &baseInfo.serviceInfo, baseInfo.authToken)
 	if err != nil {
 		return err
 	}

pkg/gui/controllers/helpers/refresh_helper_test.go

@@ -3,6 +3,7 @@ package helpers
 import (
 	"testing"
 
+	"github.com/jesseduffield/lazygit/pkg/commands/hosting_service"
 	"github.com/jesseduffield/lazygit/pkg/commands/models"
 	"github.com/samber/lo"
 	"github.com/stretchr/testify/assert"
@@ -60,14 +61,64 @@ func TestGetGithubBaseRemote(t *testing.T) {
 				assert.Nil(t, result)
 			} else {
 				assert.NotNil(t, result)
-				assert.Equal(t, c.expected, result.Name)
+				assert.Equal(t, c.expected, result.remote.Name)
 			}
 		})
 	}
 }
 
+func TestGetAuthenticatedGithubRemotes(t *testing.T) {
+	githubRemotes := []githubRemoteInfo{
+		makeGithubRemoteInfo("origin", "github.com"),
+		makeGithubRemoteInfo("fork", "github.com"),
+		makeGithubRemoteInfo("enterprise", "ghe.example.com"),
+		makeGithubRemoteInfo("missing-auth", "no-token.example.com"),
+	}
+
+	callsByHost := map[string]int{}
+	result := getAuthenticatedGithubRemotes(githubRemotes, func(host string) string {
+		callsByHost[host]++
+		switch host {
+		case "github.com":
+			return "github-token"
+		case "ghe.example.com":
+			return "ghe-token"
+		default:
+			return ""
+		}
+	})
+
+	assert.Equal(t, []githubRemoteInfo{
+		makeAuthenticatedGithubRemoteInfo("origin", "github.com", "github-token"),
+		makeAuthenticatedGithubRemoteInfo("fork", "github.com", "github-token"),
+		makeAuthenticatedGithubRemoteInfo("enterprise", "ghe.example.com", "ghe-token"),
+	}, result)
+	// Two remotes share github.com; the lookup runs only once.
+	assert.Equal(t, map[string]int{
+		"github.com":           1,
+		"ghe.example.com":      1,
+		"no-token.example.com": 1,
+	}, callsByHost)
+}
+
 func makeGithubRemoteInfoList(names ...string) []githubRemoteInfo {
 	return lo.Map(names, func(name string, _ int) githubRemoteInfo {
-		return githubRemoteInfo{remote: &models.Remote{Name: name}, repoName: name}
+		return makeGithubRemoteInfo(name, name)
 	})
 }
+
+func makeGithubRemoteInfo(name string, webDomain string) githubRemoteInfo {
+	return githubRemoteInfo{
+		remote: &models.Remote{Name: name},
+		serviceInfo: hosting_service.ServiceInfo{
+			RepoName:  name,
+			WebDomain: webDomain,
+		},
+	}
+}
+
+func makeAuthenticatedGithubRemoteInfo(name string, webDomain string, authToken string) githubRemoteInfo {
+	info := makeGithubRemoteInfo(name, webDomain)
+	info.authToken = authToken
+	return info
+}