diff --git a/pkgs/forgejo/branch-view_remove-expensive-commit-divergence-metric.patch b/pkgs/forgejo/branch-view_remove-expensive-commit-divergence-metric.patch
new file mode 100644
index 0000000..c4bb4c2
--- /dev/null
+++ b/pkgs/forgejo/branch-view_remove-expensive-commit-divergence-metric.patch
@@ -0,0 +1,59 @@
+diff --git a/services/repository/branch.go b/services/repository/branch.go
+index e1a313749f..5a8d823eef 100644
+--- a/services/repository/branch.go
++++ b/services/repository/branch.go
+@@ -26,7 +26,6 @@ import (
+ 	"code.gitea.io/gitea/modules/timeutil"
+ 	webhook_module "code.gitea.io/gitea/modules/webhook"
+ 	notify_service "code.gitea.io/gitea/services/notify"
+-	files_service "code.gitea.io/gitea/services/repository/files"
+ 
+ 	"xorm.io/builder"
+ )
+@@ -129,21 +128,7 @@ func loadOneBranch(ctx context.Context, repo *repo_model.Repository, dbBranch *g
+ 	p := protectedBranches.GetFirstMatched(branchName)
+ 	isProtected := p != nil
+ 
+-	var divergence *git.DivergeObject
+-
+-	// it's not default branch
+-	if repo.DefaultBranch != dbBranch.Name && !dbBranch.IsDeleted {
+-		var err error
+-		divergence, err = files_service.CountDivergingCommits(ctx, repo, git.BranchPrefix+branchName)
+-		if err != nil {
+-			return nil, fmt.Errorf("CountDivergingCommits: %v", err)
+-		}
+-	}
+-
+-	if divergence == nil {
+-		// tolerate the error that we cannot get divergence
+-		divergence = &git.DivergeObject{Ahead: -1, Behind: -1}
+-	}
++	divergence := &git.DivergeObject{Ahead: -1, Behind: -1}
+ 
+ 	pr, err := issues_model.GetLatestPullRequestByHeadInfo(ctx, repo.ID, branchName)
+ 	if err != nil {
+diff --git a/templates/repo/branch/list.tmpl b/templates/repo/branch/list.tmpl
+index a577fed450..e102796315 100644
+--- a/templates/repo/branch/list.tmpl
++++ b/templates/repo/branch/list.tmpl
+@@ -102,19 +102,6 @@
+ 							{{end}}
+ 							</td>
+ 							<td class="two wide ui">
+-								{{if and (not .DBBranch.IsDeleted) $.DefaultBranchBranch}}
+-								<div class="commit-divergence">
+-									<div class="bar-group">
+-										<div class="count count-behind">{{.CommitsBehind}}</div>
+-										{{/* old code bears 0/0.0 = NaN output, so it might output invalid "width: NaNpx", it just works and doesn't caues any problem. */}}
+-										<div class="bar bar-behind" style="width: {{Eval 100 "*" .CommitsBehind "/" "(" .CommitsBehind "+" .CommitsAhead "+" 0.0 ")"}}%"></div>
+-									</div>
+-									<div class="bar-group">
+-										<div class="count count-ahead">{{.CommitsAhead}}</div>
+-										<div class="bar bar-ahead" style="width: {{Eval 100 "*" .CommitsAhead "/" "(" .CommitsBehind "+" .CommitsAhead "+" 0.0 ")"}}%"></div>
+-									</div>
+-								</div>
+-								{{end}}
+ 							</td>
+ 							<td class="two wide right aligned">
+ 								{{if not .LatestPullRequest}}
diff --git a/pkgs/forgejo/commit-view_fix-broken-and-expensive-cherry-pick-default-branch-selection.patch b/pkgs/forgejo/commit-view_fix-broken-and-expensive-cherry-pick-default-branch-selection.patch
new file mode 100644
index 0000000..ae7e60f
--- /dev/null
+++ b/pkgs/forgejo/commit-view_fix-broken-and-expensive-cherry-pick-default-branch-selection.patch
@@ -0,0 +1,32 @@
+diff --git a/routers/web/repo/commit.go b/routers/web/repo/commit.go
+index 718454e063..8fa299710c 100644
+--- a/routers/web/repo/commit.go
++++ b/routers/web/repo/commit.go
+@@ -408,12 +408,6 @@ func Diff(ctx *context.Context) {
+ 		}
+ 	}
+ 
+-	ctx.Data["BranchName"], err = commit.GetBranchName()
+-	if err != nil {
+-		ctx.ServerError("commit.GetBranchName", err)
+-		return
+-	}
+-
+ 	ctx.HTML(http.StatusOK, tplCommitPage)
+ }
+ 
+diff --git a/templates/repo/commit_page.tmpl b/templates/repo/commit_page.tmpl
+index c37fb46975..18c9cf18f8 100644
+--- a/templates/repo/commit_page.tmpl
++++ b/templates/repo/commit_page.tmpl
+@@ -71,8 +71,8 @@
+ 												"branchForm" "branch-dropdown-form"
+ 												"branchURLPrefix" (printf "%s/_cherrypick/%s/" $.RepoLink .CommitID) "branchURLSuffix" ""
+ 												"setAction" true "submitForm" true}}
+-											<form method="get" action="{{$.RepoLink}}/_cherrypick/{{.CommitID}}/{{if $.BranchName}}{{PathEscapeSegments $.BranchName}}{{else}}{{PathEscapeSegments $.Repository.DefaultBranch}}{{end}}" id="branch-dropdown-form">
+-												<input type="hidden" name="ref" value="{{if $.BranchName}}{{$.BranchName}}{{else}}{{$.Repository.DefaultBranch}}{{end}}">
++											<form method="get" action="{{$.RepoLink}}/_cherrypick/{{.CommitID}}/{{PathEscapeSegments $.Repository.DefaultBranch}}" id="branch-dropdown-form">
++												<input type="hidden" name="ref" value="{{$.Repository.DefaultBranch}}">
+ 												<input type="hidden" name="refType" value="branch">
+ 												<input type="hidden" id="cherry-pick-type" name="cherry-pick-type"><br>
+ 												<button type="submit" id="cherry-pick-submit" class="ui primary button"></button>
diff --git a/pkgs/forgejo/default.nix b/pkgs/forgejo/default.nix
new file mode 100644
index 0000000..bb87f3e
--- /dev/null
+++ b/pkgs/forgejo/default.nix
@@ -0,0 +1,40 @@
+{ forgejo }:
+
+forgejo.overrideAttrs (prev: {
+  patches = [
+    # Branch divergence calculations for a single branch may take 100-200ms on something as big
+    # as nixpkgs. The branch view defaults to 20 branches for each page, taking roughtly 3s to
+    # calculate each branch sequentially and render, while consuming a single core at 100%.
+    # The idea is to look into making this less expensive or async.
+    # But for now, to get this going, we will simply drop that metric.
+    ./branch-view_remove-expensive-commit-divergence-metric.patch
+
+    # This is literally broken and eats resources for nothing of value.
+    # We should upstream this.
+    # The tl;dr is: It calculates the nearest branch for the requested commit at
+    # /:owner/:repo/commit/:commit to use it as the default cherry-pick target branch
+    # selection in a drop-down only users with commit perms can actually view and use.
+    # It's expensive to calculate and happens on every request to /commit/:commit.
+    # To add insult to injury, it's hardly of any use: The nearest branch of a commit
+    # will almost always be a branch that already carries the commit. The branch you
+    # most likely don't want to cherry-pick to.
+    ./commit-view_fix-broken-and-expensive-cherry-pick-default-branch-selection.patch
+
+    # Disable various /:owner/:repo/activity/ sub-views. They are expensive, which is
+    # totally fine and expected. There is even proper caching in place.
+    # However, on a scale of nixpkgs, those calculations take ages, while, of course,
+    # pinning a single CPU core at 100%.
+    # For now, we will simply disable this feature.
+    # Due to the 501 status code it returns, the frontend prints a "Not implemented"
+    # error, saving us from patching the frontend while still providing a helpful
+    # user-facing error text.
+    # It should be noted that this particular status code has the downside of being
+    # in the 5xx range, meaning it will show up as such in our prometheus metrics.
+    ./disable-expensive-repository-activity-stats.patch
+
+    # Migrations and pull-mirrors are something easily abused to bring a public instance to a complete halt.
+    # Both features can be disabled via repository.DISABLE_MIGRATIONS and mirror.ENABLE, but we want to keep
+    # this functionality for admins.
+    ./limit-migrations-and-pull-mirrors-to-admins.patch
+  ];
+})
diff --git a/pkgs/forgejo/disable-expensive-repository-activity-stats.patch b/pkgs/forgejo/disable-expensive-repository-activity-stats.patch
new file mode 100644
index 0000000..555007c
--- /dev/null
+++ b/pkgs/forgejo/disable-expensive-repository-activity-stats.patch
@@ -0,0 +1,34 @@
+diff --git a/routers/web/web.go b/routers/web/web.go
+index ee9694f41c..f55b8d6f62 100644
+--- a/routers/web/web.go
++++ b/routers/web/web.go
+@@ -57,6 +57,10 @@ import (
+ 	"github.com/prometheus/client_golang/prometheus"
+ )
+ 
++func endpointNotImplemented(ctx *context.Context) {
++	ctx.JSON(http.StatusNotImplemented, "This endpoint has been removed due to performance issues with it and as such is not longer implemented.")
++}
++
+ // optionsCorsHandler return a http handler which sets CORS options if enabled by config, it blocks non-CORS OPTIONS requests.
+ func optionsCorsHandler() func(next http.Handler) http.Handler {
+ 	var corsHandler func(next http.Handler) http.Handler
+@@ -1425,15 +1429,15 @@ func registerRoutes(m *web.Route) {
+ 			m.Get("/{period}", repo.Activity)
+ 			m.Group("/contributors", func() {
+ 				m.Get("", repo.Contributors)
+-				m.Get("/data", repo.ContributorsData)
++				m.Get("/data", endpointNotImplemented)
+ 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
+ 			m.Group("/code-frequency", func() {
+ 				m.Get("", repo.CodeFrequency)
+-				m.Get("/data", repo.CodeFrequencyData)
++				m.Get("/data", endpointNotImplemented)
+ 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
+ 			m.Group("/recent-commits", func() {
+ 				m.Get("", repo.RecentCommits)
+-				m.Get("/data", repo.RecentCommitsData)
++				m.Get("/data", endpointNotImplemented)
+ 			}, repo.MustBeNotEmpty, context.RequireRepoReaderOr(unit.TypeCode))
+ 		}, context.RepoRef(), context.RequireRepoReaderOr(unit.TypeCode, unit.TypePullRequests, unit.TypeIssues, unit.TypeReleases))
+ 
diff --git a/pkgs/forgejo/limit-migrations-and-pull-mirrors-to-admins.patch b/pkgs/forgejo/limit-migrations-and-pull-mirrors-to-admins.patch
new file mode 100644
index 0000000..9221e69
--- /dev/null
+++ b/pkgs/forgejo/limit-migrations-and-pull-mirrors-to-admins.patch
@@ -0,0 +1,53 @@
+diff --git a/routers/api/v1/repo/migrate.go b/routers/api/v1/repo/migrate.go
+index 2caaa130e8..455e89e93e 100644
+--- a/routers/api/v1/repo/migrate.go
++++ b/routers/api/v1/repo/migrate.go
+@@ -12,7 +12,6 @@ import (
+ 
+ 	"code.gitea.io/gitea/models"
+ 	"code.gitea.io/gitea/models/db"
+-	"code.gitea.io/gitea/models/organization"
+ 	"code.gitea.io/gitea/models/perm"
+ 	access_model "code.gitea.io/gitea/models/perm/access"
+ 	repo_model "code.gitea.io/gitea/models/repo"
+@@ -86,22 +85,7 @@ func Migrate(ctx *context.APIContext) {
+ 	}
+ 
+ 	if !ctx.Doer.IsAdmin {
+-		if !repoOwner.IsOrganization() && ctx.Doer.ID != repoOwner.ID {
+-			ctx.Error(http.StatusForbidden, "", "Given user is not an organization.")
+-			return
+-		}
+-
+-		if repoOwner.IsOrganization() {
+-			// Check ownership of organization.
+-			isOwner, err := organization.OrgFromUser(repoOwner).IsOwnedBy(ctx, ctx.Doer.ID)
+-			if err != nil {
+-				ctx.Error(http.StatusInternalServerError, "IsOwnedBy", err)
+-				return
+-			} else if !isOwner {
+-				ctx.Error(http.StatusForbidden, "", "Given user is not owner of organization.")
+-				return
+-			}
+-		}
++		ctx.Error(http.StatusForbidden, "", "You need to be administrator of this Forgejo instance to be able to create mirrors.")
+ 	}
+ 
+ 	remoteAddr, err := forms.ParseRemoteAddr(form.CloneAddr, form.AuthUsername, form.AuthPassword)
+diff --git a/routers/web/repo/migrate.go b/routers/web/repo/migrate.go
+index 97b0c425ea..554a470eab 100644
+--- a/routers/web/repo/migrate.go
++++ b/routers/web/repo/migrate.go
+@@ -150,6 +150,12 @@ func handleMigrateRemoteAddrError(ctx *context.Context, err error, tpl base.TplN
+ // MigratePost response for migrating from external git repository
+ func MigratePost(ctx *context.Context) {
+ 	form := web.GetForm(ctx).(*forms.MigrateRepoForm)
++
++	if !ctx.Doer.IsAdmin {
++		ctx.Error(http.StatusForbidden, "MigratePost: you need to be site administrator to use migrations and mirrors")
++		return
++	}
++
+ 	if setting.Repository.DisableMigrations {
+ 		ctx.Error(http.StatusForbidden, "MigratePost: the site administrator has disabled migrations")
+ 		return