Continuing with my series of "I want to run with unique architecture everywhere, but that requires SO MANY compatibility patches" series... Ivarstead! Archinatic put together a lovely little overhaul of Ivarstead in his The Great Town of Ivarstead, and I've put together a series of compatibility patches for things in my load order which needed it. All patches are ESP flagged as ESL, unless otherwise noted.

Included Patch Descriptions

A Cat's Life - moves a bunch of references to match the new exterior. Last checked against version 2.0. Thanks to matcm149 for the patch

AI Overhaul SSE - shifts some placed idle markers to match the new interior/exteriors. Made for 1.5.3, should be good through 1.8.6.

Alternate Start - Live Another Life - Shifts the spawn point so it is not in the void. Patch by TakahashiThePimp, last checked against version 4.2.2.

Artwork Imports - adjusts the placement of paintings and tapestries. Last checked against version 1.0

Aspens Ablaze - conflict resolution, placement adjustments of a few trees. Last checked against version 2.37

Atlas Map Markers - NOTE: Based on MCM version. Shifts map marker for Vilemyr Innto match new layout, adds map markers for the added temple and store. MCM toggles supported. AMM patches are being released for other patch collections and will require end-user CR between patches in order for MCM
toggling to work for everything. Last checked against version 2.0

At Your Own Pace - Thieves Guild - shifts strongbox placement. Last checked against version 2.1.0

Cheesemod for EVERYONE - Shifts a few added cheeses to match the new interior. Last checked against version 1.01

Citizens of Tamriel - shifts NPC placement to not frown in the void. Last checked against version redux.

Complete Alchemy and Cooking Overhaul - reposition of new vegetables added by CACO into new interiors. Last checked against version 2.1.5

Cooking Adventures in Skyrim - shifts the trapdoor to the Vilemyr's Inn kitchen, refinalizes navmesh. Last checked against version 2.0

Dawnguard Sentries - adjusts the patrol markers placement. Last checked against 1.1c

Distinct Interiors - Patch here was just disabling Distinct Interiors. Removed from FOMOD and put into Old Files section for posterity. Use Czasior's patch here instead.

DK's Realistic Nord Ships - adjusts the barrels placement, navmesh rework. Last checked against version 2.0

DootY - Moves a toilet to the new spot. Last checked against version 4

Drinking Fountains - Shifts fountain placement. Last checked against version 1.6

Elder Scrolls Online Imports - shifts a box and a book, resolves navmesh conflict. Last checked against version 10.0.1

Enhanced Landscapes - Disables and modifies placement of rocks additions to not clip with the ruined house, conflict resolution on landscape. Last checked against version 2.0.1

Enhanced Landscapes - Mountains and Cliffs - Disables and modifies placement of rocks additions to not clip with the ruined house. Last checked against version 1.0.2

Enhanced Lights and FX - Forwards any conflicts having Great Town of Ivarstead win, shifted any added smoke to match the new interiors, and shifted door lights where appropriate. Provided separate patch for ELFX - Exeriors as well. Last checked against version 3.06.

Embers HD - Shifts the placement of the fire for Embers to match the new interior of the Vilemyr Inn. Last checked against version 1.3998.

Embers XD - Shifts the placement of fires to better utilize the new look of Embers XD, includes some ashes spread around, and in a few places substitutes
fire types to better match aesthetics. Last checked against version 3.0.8

ezPG - moves NPC and markers out of the void, conflict resolution on a chair. Patch based on FULL variant of ezPG, probably won't work with other variants (for sure incompatible with ones without Mythos addon). Last checked against version 2.5

Farmhouse Chimneys - disables all chimneys in Ivarstead. Last checked against version 4.2.1

Gods and Worship - conflict resolution on a few records. Last checked against version 2.3

Gourmet - Tables - Adjusts the placement of the cooking pot in Vilemyr Inn. Last checked against version 1.1.12

Holidays - shifts a bunch of references to match the modified city layout. Last checked against version 2.14

Immersive Citizens - AI Overhaul - forwards ICAIO ownership/persistence changes and adapts the markers placement in Vilemyr Inn. Last checked against version 0.4.0.2

Immersive Wenches - moves a couple of idle markers to match the new interiors. Last checked against version 1.60SE

Interesting NPCs - Re-upload of ShadowOfNV's patch from here (make sure to click the link and endorse!) with the proper v1.1 fix because I had xEdit open when saving the patch and the uploaded version there is missing a bedroll fix. I had a link to it in the comments for a while now, but since it hasn't been updated, I'm putting it here for now. If requested, or if the original page updates, I'll remove this one from here, I just didn't want anyone to miss the latest update. Last checked against version 4.53

JK's Skyrim - Update to existing JK's Skyrim patch, to alter the added building to match the Great Town of Ivarstead aesthetic. ESP and ESL version provided. I recommend using the ESL version unless on an existing save, in which case I think you should be able to update using the ESP version (and existing bashed/smashed patches should definitely work on the ESP version if on a new save). Last checked against version 1.7.

Kaidan 2 - Hooks up navmesh properly for Kaidan 2's changes outside town. Patches for with/without JKs. LOTD users will probably want to open up the CK and finalize things themselves with this, as well, but we're getting to the point where we'd need 6 patches to cover every case and it'd scale from there. Last checked against version 2.1.1

Keep it Clean - Shifts the trapdoor to match new interior, ties into new navmesh. Last checked against version 3.15a

Knights of Thorn - Shifts notes in Vilemyr Inn. Last checked against version 1.00

Landscape and Water Fixes - Conflict resolution for records touched by both mods, forwarding ownership changes. Last checked against version 5.3

Landscape Grass Patch - No link for this one, specifically. The Great Town of Ivarstead repaints some of the landscape in such a way that some grass mods (I use Verdant in the screenshots) throw grass ALL OVER the place. This patch attempts to ape what Landscape Fixes for Grass Mods does so elegantly by re-doing the painting of the landscape in such a way that the grass isn't overwhelming. From my testing, this is NOT needed if you're using the JK's Patch. Still including this one since the LFFG Patch isn't updated for the new Ivarstead yet.

Lanterns of Skyrim II - Two patches available - one with, and one without JKs. If you're using JKs, you will still need the Lanterns of Skyrim II - JKs patch. You should only be using ONE of these patches, however - all the base changes are included in the JKs one. Last checked against version 4.0.

Legacy of the Dragonborn - Moves one placed gem and a drunk idle marker. No transport crates or fliers in the Vilemyr Inn. Go fig. Last checked against 6.7.1

Mihail Haystacks - Adjusts haystacks placement. Last checked against version 1

Mirai - The Girl with the Dragon Heart - Shifts a sitting idle marker on the High Hrothgar bridge to match the new bridge layout. Last checked against version 2.11

More to Say - forwards persistence on a few references. Last checked against version 8.0.3

Mythos - moves NPC and markers out of the void, conflict resolution on a chair.  Last checked against version Redux

Nature of the Wild Lands - conflict resolution on two records. Last checked against version 3.05

Notice Board - modifies the placement of the boards and markers to match the modified town layout. Last checked against version 1.4

Off Limits - adjusts the activator bounds in Vilemyr Inn. Last checked against version 2.2

Populated Skyrim HELL Edition - shifts markers to match the new interiors/exteriors. Last checked against version 4.0. Thanks to Cecell for the patch

Populated Cities and Towns - shifts markers to match the new interiors/exteriors. Last checked against version 4.1.

Radiance - Locations - conflict resolution on the chest, shifts ledger position. Last checked against version 1.0.1

Realistic Water Two - forwards RW2 water settings, probably not needed if you load RW2 after TGT Ivarstead. Last checked against version 5.7.2

Redguard Elite Armaments - CC patch which shifts a lean marker to match the new exterior (and something to lean on).

Relics of Hyrule - shifts a note and a book. Last checked against version 6.6.3.4

Requiem - adapts placement of the added food to new interiors, conflict resolution on a few records. Last checked against 5.4.5

Second Great War - Shifts the placement of a few NPCs to not spawn inside the buildings and out of navmesh, adapts placement of three markers. Last checked against version 1.10

Skyrim 3D Landscapes - adjusts placement or disables a few plants. Last checked against version 1.0.7

Skyrim Belongs to the Nords - adjusts a bunch of markers and NPCs, conflict resolution. Bear in mind that the original mod contains deleted navmeshes, which might lead to CTDs. Last checked against version 1.1

Skyrim's Unique Drinks - Shifts drink placement to match interiors. Last checked against version 1.0

Skyrim's Unique Treasures - Shifts the location of two placed objects to match the new interiors. Last checked against version 4.4

Snazzy Furniture and Clutter Overhaul - Shifts placed paintings to match new interiors. Last checked against version 1.7

Sounds of Skyrim Complete - Adjusts and adds new sound markers. Last checked against version 3.0

Tamrielic Culture - shifts a bunch of added references to match the modified interior. Last checked against v2

Thieves Night on the Town - Patch for the JK's Skyrim patch from TNOTT. Shifts the placed objects to match new interior for the JK building. last checked against version 1.02 of the TNOTT patch

Trees Addon - disables one tree clipping with Kyne's temple, conflict resolution on another. Last checked against version 1.2.8.

Additional patches are available for SMIM, Immersive Laundry, Medieval Lanterns of Skyrim, CFTO. Give 'em a look and a like!

Installation
Use a mod manager/organizer to install, or drop the loose files into your Skyrim data folder.
Patches should have their appropriate masters set and should be loaded after any mods that they are patching. Some of the fixes in question are on persistent objects and may require a new save.

Compatibility
I don't believe this should introduce any incompatibilities beyond anything which may be present between base mods. All moved objects should have been moved to locations which are non-overlapping. Let me know if you hit anything

Credits
Bethesda for Skyrim Special Edition and the Creation Kit
ElminsterAU for SSEEdit
soldierofwar for The Great Town of Ivarstead
giovanni1214 for the JK's Skyrim patch
mnikjom and SpiderAkiraC for AI Overhaul
Arthmoor for Alternate Start - Live Another Life
senterpat for Artwork Imports
Kronixx and kryptopyr for Atlas Map Markers
agd25 for At Your Own Pace - Thieves Guild
aviform, EpicCrab, DoubtSuspended, PhysicsFish, and Daniel Hodge for Cheesemod for EVERYONE
Craftian for Citizens of Tamriel, Mythos, and ezPG
kryptoptyr for Complete Alchemy and Cooking Overhaul
NorthwardMods for Cooking Adventures in Skyrim
rms827 for Dawnguard Sentries
DeviantKhaled and JPSteel2 for DK's Realistic Nord Ships
Sokkvabekk for Distinct Interiors
taylorsd for Dooty
Ludochan for Drinking Fountains
SarethesArai for Elder Scrolls Online Imports and Radiance - Locations
AceeQ for Enhanced Landscapes
anamorfus for Enhanced Lights and FX
mindflux for Embers HD and Embers XD
Scarla for Farmhouse Chimneys
Steelfeathers for Gods and Worship
Simonmagus for Gourmet - Tables
StepModifications for Holidays
Shurah for Immersive Citizens
lordkoz for Immersive Wenches
Kris Takahashi for Interesting NPCs and ShadowOfNV for the first revision of the patch
jkrojmal and Teabag86 for JK's Skyrim
livtempleton for Kaidan 2
Sthaagg for Keep it Clean
mmccarthy4 for Knights of Thorn
wizkid34 for Landscape and Water Fixes and Lanterns of Skyrim II and Tamriel Master Lights
code1k for the excellent Landscape Fixes for Grass Mods which this does not edit/have as master, but is very heavily inspired by
icecreamassassin, SirJesto, and the LOTD team for Legacy of the Dragonborn and Skyrim's Unique Drinks
Mihail for Mihail Haystacks
BigAndFlabby and kaleidx for Mirai - The Girl with the Dragon Heart
abramcf for More to Say
fxxkthisworld for Nature of the Wild Lands
mannygt for Notice Board
Korodic for Off Limits
the Sands of Time team for Populated Cities and Towns and Populated Skyrim HELL Edition
isoku for Realistic Water Two
JKaleNad for Relics of Hyrule
Probably Manuel for Requiem
Reath for Second Great War
mathy79 for Skyrim 3D Landscapes
FR158 for Skyrim Belongs to the Nords
clintmich and icecreamassassin for Skyrims Unique Treasures
gutmaw for Snazzy Furniture and Clutter Overhaul
tonycubed2, Cliffworms, SirJesto, SOT Team for Sounds of Skyrim Complete
watcherzero for Tamrielic Culture
megapatato for Thieves Night on the Town
winedave for Trees Addon
Arthmoor and the Unofficial Patch Team for Unofficial Skyrim Special Edition Project
AndrealphusVIII, TheBxushis, and SkyLover264 for World Assets Recycle Project