From 850d99c895882a62b10c652236c415ca22229665 Mon Sep 17 00:00:00 2001
From: tdgao <mr.trumgao@gmail.com>
Date: Thu, 12 Feb 2026 12:23:35 -0700
Subject: [PATCH 1/4] handle modpack upload with no loaders

---
 .../stages/MetadataStage.vue                  | 20 +++++++++++++------
 .../providers/version/manage-version-modal.ts |  4 ----
 .../providers/version/stages/loaders-stage.ts | 18 ++++++++++++-----
 3 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue b/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
index be3bf5054a..c270b9f1b7 100644
--- a/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
+++ b/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
@@ -42,13 +42,13 @@
 				<ButtonStyled type="transparent" size="standard">
 					<button
 						v-tooltip="
-							isModpack
+							modpackDisableLoaderEdit
 								? 'Modpack loaders cannot be edited'
 								: isResourcePack
 									? 'Resource pack loaders cannot be edited'
 									: undefined
 						"
-						:disabled="isModpack || isResourcePack"
+						:disabled="modpackDisableLoaderEdit || isResourcePack"
 						@click="editLoaders"
 					>
 						<EditIcon />
@@ -77,7 +77,13 @@
 						</TagItem>
 					</template>
 
-					<span v-if="!draftVersion.loaders.length">No loaders selected.</span>
+					<TagItem
+						v-if="!draftVersion.loaders.length && projectType === 'modpack'"
+						class="border !border-solid border-surface-5 hover:no-underline"
+					>
+						No mod loader
+					</TagItem>
+					<span v-else-if="!draftVersion.loaders.length">No loaders selected.</span>
 				</div>
 			</div>
 		</div>
@@ -90,8 +96,8 @@
 
 				<ButtonStyled type="transparent" size="standard">
 					<button
-						v-tooltip="isModpack ? 'Modpack versions cannot be edited' : undefined"
-						:disabled="isModpack"
+						v-tooltip="modpackDisableLoaderEdit ? 'Modpack versions cannot be edited' : undefined"
+						:disabled="modpackDisableLoaderEdit"
 						@click="editVersions"
 					>
 						<EditIcon />
@@ -223,7 +229,9 @@ const { projectV2 } = injectProjectPageContext()
 
 const generatedState = useGeneratedState()
 const loaders = computed(() => generatedState.value.loaders)
-const isModpack = computed(() => projectType.value === 'modpack')
+const modpackDisableLoaderEdit = computed(
+	() => projectType.value === 'modpack' && (inferredVersionData.value?.loaders?.length ?? 0) !== 0,
+)
 const isResourcePack = computed(
 	() =>
 		projectType.value === 'resourcepack' &&
diff --git a/apps/frontend/src/providers/version/manage-version-modal.ts b/apps/frontend/src/providers/version/manage-version-modal.ts
index 8598055b5b..e4a60b1b1d 100644
--- a/apps/frontend/src/providers/version/manage-version-modal.ts
+++ b/apps/frontend/src/providers/version/manage-version-modal.ts
@@ -421,10 +421,6 @@ export function createManageVersionContext(
 			inferred.loaders = ['datapack']
 		}
 
-		if (noLoaders && projectType.value === 'modpack') {
-			inferred.loaders = ['minecraft']
-		}
-
 		inferredVersionData.value = inferred
 
 		return inferred
diff --git a/apps/frontend/src/providers/version/stages/loaders-stage.ts b/apps/frontend/src/providers/version/stages/loaders-stage.ts
index 3e036bcc34..71bbd5d954 100644
--- a/apps/frontend/src/providers/version/stages/loaders-stage.ts
+++ b/apps/frontend/src/providers/version/stages/loaders-stage.ts
@@ -10,8 +10,14 @@ export const stageConfig: StageConfigInput<ManageVersionContextValue> = {
 	id: 'add-loaders',
 	stageContent: markRaw(LoadersStage),
 	title: (ctx) => (ctx.editingVersion.value ? 'Edit loaders' : 'Loaders'),
-	skip: (ctx) =>
-		(ctx.inferredVersionData.value?.loaders?.length ?? 0) > 0 || ctx.editingVersion.value,
+	skip: (ctx) => {
+		const inferredLoadersLength = ctx.inferredVersionData.value?.loaders?.length ?? 0
+		return (
+			inferredLoadersLength > 0 ||
+			ctx.editingVersion.value ||
+			(inferredLoadersLength === 0 && ctx.projectType.value === 'modpack')
+		)
+	},
 	hideStageInBreadcrumb: (ctx) => !ctx.primaryFile.value || ctx.handlingNewFiles.value,
 	cannotNavigateForward: (ctx) => ctx.draftVersion.value.loaders.length === 0,
 	leftButtonConfig: (ctx) => ({
@@ -36,20 +42,22 @@ export const fromDetailsStageConfig: StageConfigInput<ManageVersionContextValue>
 	leftButtonConfig: (ctx) => ({
 		label: 'Back',
 		icon: LeftArrowIcon,
-		disabled: ctx.draftVersion.value.loaders.length === 0,
+		disabled: ctx.draftVersion.value.loaders.length === 0 && ctx.projectType.value !== 'modpack',
 		onClick: () => ctx.modal.value?.setStage('metadata'),
 	}),
 	rightButtonConfig: (ctx) =>
 		ctx.editingVersion.value
 			? {
 					...ctx.saveButtonConfig(),
-					disabled: ctx.draftVersion.value.loaders.length === 0,
+					disabled:
+						ctx.draftVersion.value.loaders.length === 0 && ctx.projectType.value !== 'modpack',
 				}
 			: {
 					label: 'Add details',
 					icon: RightArrowIcon,
 					iconPosition: 'after',
-					disabled: ctx.draftVersion.value.loaders.length === 0,
+					disabled:
+						ctx.draftVersion.value.loaders.length === 0 && ctx.projectType.value !== 'modpack',
 					onClick: () => ctx.modal.value?.setStage('add-details'),
 				},
 }

From edd17d2a046a469d1bfd03ba23319555804fe340 Mon Sep 17 00:00:00 2001
From: tdgao <mr.trumgao@gmail.com>
Date: Thu, 12 Feb 2026 12:35:12 -0700
Subject: [PATCH 2/4] restrict loaders for modpack

---
 .../components/LoaderPicker.vue                       | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue b/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
index dd396f62dc..a868a083e5 100644
--- a/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
+++ b/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
@@ -1,8 +1,9 @@
 <template>
 	<div class="flex flex-col gap-2.5">
-		<span class="font-semibold text-contrast">Loaders <span class="text-red">*</span></span>
+		<span class="font-semibold text-contrast">Loaders</span>
 
 		<Chips
+			v-if="groupLabels.length > 1"
 			v-model="loaderGroup"
 			:items="groupLabels"
 			:never-empty="true"
@@ -42,6 +43,7 @@
 import type { Labrinth } from '@modrinth/api-client'
 import { getLoaderIcon } from '@modrinth/assets'
 import { Chips, FormattedTag, TagItem } from '@modrinth/ui'
+import { injectManageVersionContext } from '~/providers/version/manage-version-modal'
 
 const selectedLoaders = defineModel<string[]>({ default: [] })
 
@@ -50,11 +52,16 @@ const { loaders } = defineProps<{
 	toggleLoader: (loader: string) => void
 }>()
 
+const { projectType } = injectManageVersionContext()
+
 const loaderGroup = ref<GroupLabels>('mods')
 
 type GroupLabels = 'mods' | 'plugins' | 'packs' | 'shaders' | 'other'
 
-const groupLabels: GroupLabels[] = ['mods', 'plugins', 'packs', 'shaders']
+const groupLabels = computed<GroupLabels[]>(() => {
+	if (projectType.value === 'modpack') return ['mods']
+	return ['mods', 'plugins', 'packs', 'shaders']
+})
 
 function groupLoaders(loaders: Labrinth.Tags.v2.Loader[]) {
 	const groups: Record<GroupLabels, Labrinth.Tags.v2.Loader[]> = {

From 0e62b055018f45fcdf5b3c25b8edef85a35d19d8 Mon Sep 17 00:00:00 2001
From: tdgao <mr.trumgao@gmail.com>
Date: Thu, 12 Feb 2026 12:50:14 -0700
Subject: [PATCH 3/4] actually, dont allow modpack loaders to be editable

---
 .../stages/MetadataStage.vue                     | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue b/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
index c270b9f1b7..5852d42ef3 100644
--- a/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
+++ b/apps/frontend/src/components/ui/create-project-version/stages/MetadataStage.vue
@@ -42,13 +42,13 @@
 				<ButtonStyled type="transparent" size="standard">
 					<button
 						v-tooltip="
-							modpackDisableLoaderEdit
+							isModpack
 								? 'Modpack loaders cannot be edited'
 								: isResourcePack
 									? 'Resource pack loaders cannot be edited'
 									: undefined
 						"
-						:disabled="modpackDisableLoaderEdit || isResourcePack"
+						:disabled="isModpack || isResourcePack"
 						@click="editLoaders"
 					>
 						<EditIcon />
@@ -78,12 +78,12 @@
 					</template>
 
 					<TagItem
-						v-if="!draftVersion.loaders.length && projectType === 'modpack'"
+						v-if="!draftVersionLoaders.length && projectType === 'modpack'"
 						class="border !border-solid border-surface-5 hover:no-underline"
 					>
 						No mod loader
 					</TagItem>
-					<span v-else-if="!draftVersion.loaders.length">No loaders selected.</span>
+					<span v-else-if="!draftVersionLoaders.length">No loaders selected.</span>
 				</div>
 			</div>
 		</div>
@@ -96,8 +96,8 @@
 
 				<ButtonStyled type="transparent" size="standard">
 					<button
-						v-tooltip="modpackDisableLoaderEdit ? 'Modpack versions cannot be edited' : undefined"
-						:disabled="modpackDisableLoaderEdit"
+						v-tooltip="isModpack ? 'Modpack versions cannot be edited' : undefined"
+						:disabled="isModpack"
 						@click="editVersions"
 					>
 						<EditIcon />
@@ -229,9 +229,7 @@ const { projectV2 } = injectProjectPageContext()
 
 const generatedState = useGeneratedState()
 const loaders = computed(() => generatedState.value.loaders)
-const modpackDisableLoaderEdit = computed(
-	() => projectType.value === 'modpack' && (inferredVersionData.value?.loaders?.length ?? 0) !== 0,
-)
+const isModpack = computed(() => projectType.value === 'modpack')
 const isResourcePack = computed(
 	() =>
 		projectType.value === 'resourcepack' &&

From 452331bba462f441704f03e9b3e129613928c351 Mon Sep 17 00:00:00 2001
From: tdgao <mr.trumgao@gmail.com>
Date: Thu, 12 Feb 2026 12:52:15 -0700
Subject: [PATCH 4/4] revert loader picker changes

---
 .../create-project-version/components/LoaderPicker.vue   | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue b/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
index a868a083e5..eedf25212f 100644
--- a/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
+++ b/apps/frontend/src/components/ui/create-project-version/components/LoaderPicker.vue
@@ -3,7 +3,6 @@
 		<span class="font-semibold text-contrast">Loaders</span>
 
 		<Chips
-			v-if="groupLabels.length > 1"
 			v-model="loaderGroup"
 			:items="groupLabels"
 			:never-empty="true"
@@ -43,7 +42,6 @@
 import type { Labrinth } from '@modrinth/api-client'
 import { getLoaderIcon } from '@modrinth/assets'
 import { Chips, FormattedTag, TagItem } from '@modrinth/ui'
-import { injectManageVersionContext } from '~/providers/version/manage-version-modal'
 
 const selectedLoaders = defineModel<string[]>({ default: [] })
 
@@ -52,16 +50,11 @@ const { loaders } = defineProps<{
 	toggleLoader: (loader: string) => void
 }>()
 
-const { projectType } = injectManageVersionContext()
-
 const loaderGroup = ref<GroupLabels>('mods')
 
 type GroupLabels = 'mods' | 'plugins' | 'packs' | 'shaders' | 'other'
 
-const groupLabels = computed<GroupLabels[]>(() => {
-	if (projectType.value === 'modpack') return ['mods']
-	return ['mods', 'plugins', 'packs', 'shaders']
-})
+const groupLabels: GroupLabels[] = ['mods', 'plugins', 'packs', 'shaders']
 
 function groupLoaders(loaders: Labrinth.Tags.v2.Loader[]) {
 	const groups: Record<GroupLabels, Labrinth.Tags.v2.Loader[]> = {