From d1943f4238687cb2248618305d5df8a8d17bae14 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Sun, 8 Mar 2026 17:44:53 +0000
Subject: [PATCH 01/15] Add support for generating flat and unique sequences in
 blueprint enumeration tags

---
 authentik/blueprints/tests/fixtures/tags.yaml | 10 ++++++++++
 authentik/blueprints/tests/test_v1.py         | 10 ++++++++++
 authentik/blueprints/v1/common.py             |  4 +++-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index b0e53727f0b0..98f44b5a975b 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -121,6 +121,16 @@ entries:
                   SEQ,
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
+              enumerate_nested_sequence_to_flat_sequence: !Enumerate [
+                  [!Context sequence, !Context sequence],
+                  FLAT_SEQ,
+                  !Format ["flattened-%%s-%%s", !Index 0, !Value 0]
+              ]
+              enumerate_sequence_to_uniq_sequence: !Enumerate [
+                  ["foo", "bar", "foo"],
+                  UNIQ_SEQ,
+                  !Format ["uniq-%%s-%%s", !Index 0, !Value 0]
+              ]
               enumerate_sequence_to_mapping: !Enumerate [
                   !Context sequence,
                   MAP,
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 04cabe36cc3f..4b9708aee324 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -186,6 +186,16 @@ def test_import_yaml_tags(self):
                     "prefixed-items-0-foo",
                     "prefixed-items-1-bar",
                 ],
+                "enumerate_nested_sequence_to_flat_sequence": [
+                    "flattened-0-foo",
+                    "flattened-1-bar",
+                    "flattened-2-foo",
+                    "flattened-3-bar",
+                ],
+                "enumerate_sequence_to_uniq_sequence": [
+                    "uniq-0-foo",
+                    "uniq-0-bar",
+                ],
                 "enumerate_sequence_to_mapping": {"index: 0": "foo", "index: 1": "bar"},
                 "nested_complex_enumeration": {
                     "0": {
diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index b27929358cbd..58b73ee084e6 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -504,10 +504,12 @@ class Enumerate(YAMLTag, YAMLTagContext):
 
     iterable: YAMLTag | Iterable
     item_body: Any
-    output_body: Literal["SEQ", "MAP"]
+    output_body: Literal["SEQ", "FLAT_SEQ", "UNIQ_SEQ", "MAP"]
 
     _OUTPUT_BODIES = {
         "SEQ": (list, lambda a, b: [*a, b]),
+        "FLAT_SEQ": (list, lambda a, b: [*a, *b]),
+        "UNIQ_SEQ": (list, lambda a, b: list(set([*a, *b]))),
         "MAP": (
             dict,
             lambda a, b: always_merger.merge(a, {b[0]: b[1]} if isinstance(b, tuple | list) else b),

From c2c5f28311fe799e42a4d90c443ed2b69aa9f583 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Sun, 8 Mar 2026 18:01:47 +0000
Subject: [PATCH 02/15] fix

---
 authentik/blueprints/tests/fixtures/tags.yaml | 2 +-
 authentik/blueprints/tests/test_v1.py         | 1 +
 authentik/blueprints/v1/common.py             | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index 98f44b5a975b..52bf8df88c0f 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -122,7 +122,7 @@ entries:
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
               enumerate_nested_sequence_to_flat_sequence: !Enumerate [
-                  [!Context sequence, !Context sequence],
+                  [!Context sequence, !Context sequence, scalar_value],
                   FLAT_SEQ,
                   !Format ["flattened-%%s-%%s", !Index 0, !Value 0]
               ]
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 4b9708aee324..d3adbd112759 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -191,6 +191,7 @@ def test_import_yaml_tags(self):
                     "flattened-1-bar",
                     "flattened-2-foo",
                     "flattened-3-bar",
+                    "flattened-4-scalar_value",
                 ],
                 "enumerate_sequence_to_uniq_sequence": [
                     "uniq-0-foo",
diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index 58b73ee084e6..e19504337857 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -508,7 +508,7 @@ class Enumerate(YAMLTag, YAMLTagContext):
 
     _OUTPUT_BODIES = {
         "SEQ": (list, lambda a, b: [*a, b]),
-        "FLAT_SEQ": (list, lambda a, b: [*a, *b]),
+        "FLAT_SEQ": (list, lambda a, b: a + (list(b) if isinstance(b, (tuple, list)) else [b])),
         "UNIQ_SEQ": (list, lambda a, b: list(set([*a, *b]))),
         "MAP": (
             dict,

From 39b7813385bb573556fe7a268873c23debdc98c4 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Sun, 8 Mar 2026 18:07:39 +0000
Subject: [PATCH 03/15] fix

---
 authentik/blueprints/v1/common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index e19504337857..c4b9ea19bbf6 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -509,7 +509,7 @@ class Enumerate(YAMLTag, YAMLTagContext):
     _OUTPUT_BODIES = {
         "SEQ": (list, lambda a, b: [*a, b]),
         "FLAT_SEQ": (list, lambda a, b: a + (list(b) if isinstance(b, (tuple, list)) else [b])),
-        "UNIQ_SEQ": (list, lambda a, b: list(set([*a, *b]))),
+        "UNIQ_SEQ": (list, lambda a, b: list(set([*a, b]))),
         "MAP": (
             dict,
             lambda a, b: always_merger.merge(a, {b[0]: b[1]} if isinstance(b, tuple | list) else b),

From 99cc1ecfca686ef666714bae7a3cdb7e8ed8d2ee Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Sun, 8 Mar 2026 18:13:23 +0000
Subject: [PATCH 04/15] add docs

---
 website/docs/customize/blueprints/v1/tags.mdx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/website/docs/customize/blueprints/v1/tags.mdx b/website/docs/customize/blueprints/v1/tags.mdx
index 04a786b1cb3d..ffc966abf324 100644
--- a/website/docs/customize/blueprints/v1/tags.mdx
+++ b/website/docs/customize/blueprints/v1/tags.mdx
@@ -208,9 +208,13 @@ This tag takes 3 arguments:
 ```
 
 - **iterable**: Any Python iterable or custom tag that resolves to such iterable
-- **output_object_type**: `SEQ` or `MAP`. Controls whether the returned YAML will be a mapping or a sequence.
+- **output_object_type**: `SEQ`, `FLAT_SEQ`, `UNIQ_SEQ` or `MAP`. Controls whether the returned YAML will be a mapping or a sequence. With `FLAT_SEQ` the resulting list will also be flattened, while with `UNIQ_SEQ` duplicated entries will be removed
 - **single_item_yaml**: The YAML to use to create a single entry in the output object
 
+:::note
+`FLAT_SEQ` and `UNIQ_SEQ` require authentik 2026.05+
+:::
+
 2. `!Index` tag:
 
 :::info

From d1ab3db12d8b0e38fb75876a89bbbe85592a0c2d Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Sun, 8 Mar 2026 18:23:24 +0000
Subject: [PATCH 05/15] fix test

---
 authentik/blueprints/tests/fixtures/tags.yaml | 2 +-
 authentik/blueprints/tests/test_v1.py         | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index 52bf8df88c0f..bbd4775436e9 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -129,7 +129,7 @@ entries:
               enumerate_sequence_to_uniq_sequence: !Enumerate [
                   ["foo", "bar", "foo"],
                   UNIQ_SEQ,
-                  !Format ["uniq-%%s-%%s", !Index 0, !Value 0]
+                  !Value 0
               ]
               enumerate_sequence_to_mapping: !Enumerate [
                   !Context sequence,
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index d3adbd112759..327f587e3605 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -194,8 +194,8 @@ def test_import_yaml_tags(self):
                     "flattened-4-scalar_value",
                 ],
                 "enumerate_sequence_to_uniq_sequence": [
-                    "uniq-0-foo",
-                    "uniq-0-bar",
+                    "foo",
+                    "bar",
                 ],
                 "enumerate_sequence_to_mapping": {"index: 0": "foo", "index: 1": "bar"},
                 "nested_complex_enumeration": {

From ea11d00893c3763d5515da9d5e016f166095da6a Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 01:45:47 +0000
Subject: [PATCH 06/15] fix

---
 authentik/blueprints/tests/fixtures/tags.yaml |  2 +-
 authentik/blueprints/tests/test_v1.py         | 10 +++++-----
 authentik/blueprints/v1/common.py             | 12 +++++++-----
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index bbd4775436e9..ed0324ec2ede 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -124,7 +124,7 @@ entries:
               enumerate_nested_sequence_to_flat_sequence: !Enumerate [
                   [!Context sequence, !Context sequence, scalar_value],
                   FLAT_SEQ,
-                  !Format ["flattened-%%s-%%s", !Index 0, !Value 0]
+                  !Value 0
               ]
               enumerate_sequence_to_uniq_sequence: !Enumerate [
                   ["foo", "bar", "foo"],
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 327f587e3605..9dcab9598442 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -187,11 +187,11 @@ def test_import_yaml_tags(self):
                     "prefixed-items-1-bar",
                 ],
                 "enumerate_nested_sequence_to_flat_sequence": [
-                    "flattened-0-foo",
-                    "flattened-1-bar",
-                    "flattened-2-foo",
-                    "flattened-3-bar",
-                    "flattened-4-scalar_value",
+                    "foo",
+                    "bar",
+                    "foo",
+                    "bar",
+                    "scalar_value",
                 ],
                 "enumerate_sequence_to_uniq_sequence": [
                     "foo",
diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index c4b9ea19bbf6..e1580c6bf0f9 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -15,6 +15,7 @@
 from deepmerge import always_merger
 from django.apps import apps
 from django.db.models import Model, Q
+from more_itertools import collapse
 from rest_framework.exceptions import ValidationError
 from rest_framework.fields import Field
 from rest_framework.serializers import Serializer
@@ -507,12 +508,13 @@ class Enumerate(YAMLTag, YAMLTagContext):
     output_body: Literal["SEQ", "FLAT_SEQ", "UNIQ_SEQ", "MAP"]
 
     _OUTPUT_BODIES = {
-        "SEQ": (list, lambda a, b: [*a, b]),
-        "FLAT_SEQ": (list, lambda a, b: a + (list(b) if isinstance(b, (tuple, list)) else [b])),
-        "UNIQ_SEQ": (list, lambda a, b: list(set([*a, b]))),
+        "SEQ": (list, lambda a, b: [*a, b], lambda x: x),
+        "FLAT_SEQ": (list, lambda a, b: [*a, b], collapse),
+        "UNIQ_SEQ": (list, lambda a, b: [*a, b], lambda x: list(set(x))),
         "MAP": (
             dict,
             lambda a, b: always_merger.merge(a, {b[0]: b[1]} if isinstance(b, tuple | list) else b),
+            lambda x: x,
         ),
     }
 
@@ -552,7 +554,7 @@ def resolve(self, entry: BlueprintEntry, blueprint: Blueprint) -> Any:
             iterable = tuple(enumerate(iterable))
 
         try:
-            output_class, add_fn = self._OUTPUT_BODIES[self.output_body.upper()]
+            output_class, add_fn, post_process_fn = self._OUTPUT_BODIES[self.output_body.upper()]
         except KeyError as exc:
             raise EntryInvalidError.from_entry(exc, entry) from exc
 
@@ -572,7 +574,7 @@ def resolve(self, entry: BlueprintEntry, blueprint: Blueprint) -> Any:
         finally:
             self.__current_context = tuple()
 
-        return result
+        return post_process_fn(result)
 
 
 class EnumeratedItem(YAMLTag):

From fa67bb710b990bf79cac2d2cfaa8878bbd1ea050 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 01:47:05 +0000
Subject: [PATCH 07/15] fix note

---
 website/docs/customize/blueprints/v1/tags.mdx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/website/docs/customize/blueprints/v1/tags.mdx b/website/docs/customize/blueprints/v1/tags.mdx
index ffc966abf324..f00e845ddcae 100644
--- a/website/docs/customize/blueprints/v1/tags.mdx
+++ b/website/docs/customize/blueprints/v1/tags.mdx
@@ -211,7 +211,7 @@ This tag takes 3 arguments:
 - **output_object_type**: `SEQ`, `FLAT_SEQ`, `UNIQ_SEQ` or `MAP`. Controls whether the returned YAML will be a mapping or a sequence. With `FLAT_SEQ` the resulting list will also be flattened, while with `UNIQ_SEQ` duplicated entries will be removed
 - **single_item_yaml**: The YAML to use to create a single entry in the output object
 
-:::note
+:::info
 `FLAT_SEQ` and `UNIQ_SEQ` require authentik 2026.05+
 :::
 

From 85f8de366db3cb0d10d19f40518b23888bea76e5 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 01:49:11 +0000
Subject: [PATCH 08/15] add test case

---
 authentik/blueprints/tests/fixtures/tags.yaml | 2 +-
 authentik/blueprints/tests/test_v1.py         | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index ed0324ec2ede..65284054e1f4 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -122,7 +122,7 @@ entries:
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
               enumerate_nested_sequence_to_flat_sequence: !Enumerate [
-                  [!Context sequence, !Context sequence, scalar_value],
+                  [!Context sequence, !Context sequence, scalar_value, [[deeply_nested]]],
                   FLAT_SEQ,
                   !Value 0
               ]
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 9dcab9598442..1c1e517f18f3 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -192,6 +192,7 @@ def test_import_yaml_tags(self):
                     "foo",
                     "bar",
                     "scalar_value",
+                    "deeply_nested",
                 ],
                 "enumerate_sequence_to_uniq_sequence": [
                     "foo",

From 2f77c049a2e3d7ee31ca1182764d9c20f425bc3c Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 02:06:05 +0000
Subject: [PATCH 09/15] add more-itertools package

---
 pyproject.toml |  1 +
 uv.lock        | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index 02c497c04a83..20b035b2b763 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,6 +44,7 @@ dependencies = [
   "kubernetes==35.0.0",
   "ldap3==2.9.1",
   "lxml==6.0.2",
+  "more-itertools>=10.8.0",
   "msgraph-sdk==1.55.0",
   "opencontainers==0.0.15",
   "packaging==26.0",
diff --git a/uv.lock b/uv.lock
index f1420d7a1a05..073e49924f52 100644
--- a/uv.lock
+++ b/uv.lock
@@ -245,6 +245,7 @@ dependencies = [
     { name = "kubernetes" },
     { name = "ldap3" },
     { name = "lxml" },
+    { name = "more-itertools" },
     { name = "msgraph-sdk" },
     { name = "opencontainers" },
     { name = "packaging" },
@@ -354,6 +355,7 @@ requires-dist = [
     { name = "kubernetes", specifier = "==35.0.0" },
     { name = "ldap3", specifier = "==2.9.1" },
     { name = "lxml", specifier = "==6.0.2" },
+    { name = "more-itertools", specifier = ">=10.8.0" },
     { name = "msgraph-sdk", specifier = "==1.55.0" },
     { name = "opencontainers", git = "https://github.com/vsoch/oci-python?rev=ceb4fcc090851717a3069d78e85ceb1e86c2740c" },
     { name = "packaging", specifier = "==26.0" },
@@ -2331,6 +2333,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/6f/e5/bd382327e7ddaaa091f1f323d760408213136f41940d074b2ffffd9a1127/microsoft_kiota_serialization_text-1.9.8-py3-none-any.whl", hash = "sha256:dd89ae49693623c0e1d8f07414aa7d71b34959a5253131b8b63d81920f08c6b1", size = 8883, upload-time = "2025-12-29T15:25:23.662Z" },
 ]
 
+[[package]]
+name = "more-itertools"
+version = "10.8.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/ea/5d/38b681d3fce7a266dd9ab73c66959406d565b3e85f21d5e66e1181d93721/more_itertools-10.8.0.tar.gz", hash = "sha256:f638ddf8a1a0d134181275fb5d58b086ead7c6a72429ad725c67503f13ba30bd", size = 137431, upload-time = "2025-09-02T15:23:11.018Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/a4/8e/469e5a4a2f5855992e425f3cb33804cc07bf18d48f2db061aec61ce50270/more_itertools-10.8.0-py3-none-any.whl", hash = "sha256:52d4362373dcf7c52546bc4af9a86ee7c4579df9a8dc268be0a2f949d376cc9b", size = 69667, upload-time = "2025-09-02T15:23:09.635Z" },
+]
+
 [[package]]
 name = "msal"
 version = "1.34.0"

From fd2c20318967790b4cbd0b783ce0c8c9f3a68b96 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 02:29:23 +0000
Subject: [PATCH 10/15] improve

---
 authentik/blueprints/v1/common.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index e1580c6bf0f9..4bdf3a3d18c0 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -508,13 +508,13 @@ class Enumerate(YAMLTag, YAMLTagContext):
     output_body: Literal["SEQ", "FLAT_SEQ", "UNIQ_SEQ", "MAP"]
 
     _OUTPUT_BODIES = {
-        "SEQ": (list, lambda a, b: [*a, b], lambda x: x),
+        "SEQ": (list, lambda a, b: [*a, b], None),
         "FLAT_SEQ": (list, lambda a, b: [*a, b], collapse),
         "UNIQ_SEQ": (list, lambda a, b: [*a, b], lambda x: list(set(x))),
         "MAP": (
             dict,
             lambda a, b: always_merger.merge(a, {b[0]: b[1]} if isinstance(b, tuple | list) else b),
-            lambda x: x,
+            None,
         ),
     }
 
@@ -574,7 +574,7 @@ def resolve(self, entry: BlueprintEntry, blueprint: Blueprint) -> Any:
         finally:
             self.__current_context = tuple()
 
-        return post_process_fn(result)
+        return post_process_fn(result) if post_process_fn else result
 
 
 class EnumeratedItem(YAMLTag):

From 8e5b0240026ff3c4861590356d6ba805d3d076a0 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 02:52:17 +0000
Subject: [PATCH 11/15] test

---
 authentik/blueprints/tests/fixtures/tags.yaml | 10 ----------
 authentik/blueprints/tests/test_v1.py         | 12 ------------
 2 files changed, 22 deletions(-)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index 65284054e1f4..b0e53727f0b0 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -121,16 +121,6 @@ entries:
                   SEQ,
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
-              enumerate_nested_sequence_to_flat_sequence: !Enumerate [
-                  [!Context sequence, !Context sequence, scalar_value, [[deeply_nested]]],
-                  FLAT_SEQ,
-                  !Value 0
-              ]
-              enumerate_sequence_to_uniq_sequence: !Enumerate [
-                  ["foo", "bar", "foo"],
-                  UNIQ_SEQ,
-                  !Value 0
-              ]
               enumerate_sequence_to_mapping: !Enumerate [
                   !Context sequence,
                   MAP,
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 1c1e517f18f3..04cabe36cc3f 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -186,18 +186,6 @@ def test_import_yaml_tags(self):
                     "prefixed-items-0-foo",
                     "prefixed-items-1-bar",
                 ],
-                "enumerate_nested_sequence_to_flat_sequence": [
-                    "foo",
-                    "bar",
-                    "foo",
-                    "bar",
-                    "scalar_value",
-                    "deeply_nested",
-                ],
-                "enumerate_sequence_to_uniq_sequence": [
-                    "foo",
-                    "bar",
-                ],
                 "enumerate_sequence_to_mapping": {"index: 0": "foo", "index: 1": "bar"},
                 "nested_complex_enumeration": {
                     "0": {

From 7a4b467690c1d362d6eb544f0693f1bec685ea62 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 03:13:20 +0000
Subject: [PATCH 12/15] test

---
 authentik/blueprints/tests/fixtures/tags.yaml | 5 +++++
 authentik/blueprints/tests/test_v1.py         | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index b0e53727f0b0..eeee54a5a886 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -121,6 +121,11 @@ entries:
                   SEQ,
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
+              enumerate_sequence_to_uniq_sequence: !Enumerate [
+                  ["foo", "bar", "foo"],
+                  UNIQ_SEQ,
+                  !Value 0
+              ]
               enumerate_sequence_to_mapping: !Enumerate [
                   !Context sequence,
                   MAP,
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 04cabe36cc3f..95911a719d35 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -186,6 +186,10 @@ def test_import_yaml_tags(self):
                     "prefixed-items-0-foo",
                     "prefixed-items-1-bar",
                 ],
+                "enumerate_sequence_to_uniq_sequence": [
+                    "foo",
+                    "bar",
+                ],
                 "enumerate_sequence_to_mapping": {"index: 0": "foo", "index: 1": "bar"},
                 "nested_complex_enumeration": {
                     "0": {

From ffb5cadc4f88c78cd893c64197302bf613274f0b Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 03:40:30 +0000
Subject: [PATCH 13/15] fix

---
 authentik/blueprints/v1/common.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index 4bdf3a3d18c0..37fb55efeff6 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -509,7 +509,7 @@ class Enumerate(YAMLTag, YAMLTagContext):
 
     _OUTPUT_BODIES = {
         "SEQ": (list, lambda a, b: [*a, b], None),
-        "FLAT_SEQ": (list, lambda a, b: [*a, b], collapse),
+        "FLAT_SEQ": (list, lambda a, b: [*a, b], lambda x: list(collapse(x))),
         "UNIQ_SEQ": (list, lambda a, b: [*a, b], lambda x: list(set(x))),
         "MAP": (
             dict,

From a9fefb72e6fe90473e9fdecc9e64f7084d5aa4b4 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 03:41:09 +0000
Subject: [PATCH 14/15] test

---
 authentik/blueprints/tests/fixtures/tags.yaml | 5 +++++
 authentik/blueprints/tests/test_v1.py         | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/authentik/blueprints/tests/fixtures/tags.yaml b/authentik/blueprints/tests/fixtures/tags.yaml
index eeee54a5a886..65284054e1f4 100644
--- a/authentik/blueprints/tests/fixtures/tags.yaml
+++ b/authentik/blueprints/tests/fixtures/tags.yaml
@@ -121,6 +121,11 @@ entries:
                   SEQ,
                   !Format ["prefixed-items-%%s-%%s", !Index 0, !Value 0]
               ]
+              enumerate_nested_sequence_to_flat_sequence: !Enumerate [
+                  [!Context sequence, !Context sequence, scalar_value, [[deeply_nested]]],
+                  FLAT_SEQ,
+                  !Value 0
+              ]
               enumerate_sequence_to_uniq_sequence: !Enumerate [
                   ["foo", "bar", "foo"],
                   UNIQ_SEQ,
diff --git a/authentik/blueprints/tests/test_v1.py b/authentik/blueprints/tests/test_v1.py
index 95911a719d35..1c1e517f18f3 100644
--- a/authentik/blueprints/tests/test_v1.py
+++ b/authentik/blueprints/tests/test_v1.py
@@ -186,6 +186,14 @@ def test_import_yaml_tags(self):
                     "prefixed-items-0-foo",
                     "prefixed-items-1-bar",
                 ],
+                "enumerate_nested_sequence_to_flat_sequence": [
+                    "foo",
+                    "bar",
+                    "foo",
+                    "bar",
+                    "scalar_value",
+                    "deeply_nested",
+                ],
                 "enumerate_sequence_to_uniq_sequence": [
                     "foo",
                     "bar",

From 2889ee8686a96717a3a141d128b37eba7b3403d3 Mon Sep 17 00:00:00 2001
From: Stanislav Dimov <stanislav.vdimov@gmail.com>
Date: Mon, 9 Mar 2026 03:48:34 +0000
Subject: [PATCH 15/15] fix order preservation when generating unique sequences

---
 authentik/blueprints/v1/common.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/authentik/blueprints/v1/common.py b/authentik/blueprints/v1/common.py
index 37fb55efeff6..b46c39ea72f1 100644
--- a/authentik/blueprints/v1/common.py
+++ b/authentik/blueprints/v1/common.py
@@ -15,7 +15,7 @@
 from deepmerge import always_merger
 from django.apps import apps
 from django.db.models import Model, Q
-from more_itertools import collapse
+from more_itertools import collapse, unique_everseen
 from rest_framework.exceptions import ValidationError
 from rest_framework.fields import Field
 from rest_framework.serializers import Serializer
@@ -510,7 +510,7 @@ class Enumerate(YAMLTag, YAMLTagContext):
     _OUTPUT_BODIES = {
         "SEQ": (list, lambda a, b: [*a, b], None),
         "FLAT_SEQ": (list, lambda a, b: [*a, b], lambda x: list(collapse(x))),
-        "UNIQ_SEQ": (list, lambda a, b: [*a, b], lambda x: list(set(x))),
+        "UNIQ_SEQ": (list, lambda a, b: [*a, b], lambda x: list(unique_everseen(x, key=tuple))),
         "MAP": (
             dict,
             lambda a, b: always_merger.merge(a, {b[0]: b[1]} if isinstance(b, tuple | list) else b),