From df7a114d7ac3afa5ea7560617539dd9b8211f036 Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Wed, 6 May 2026 08:41:59 +0200
Subject: [PATCH] IC: use the newer nif27 format (#25792)

---
 compiler/deps.nim | 11 ++++++++++-
 doc/ic.md         |  2 +-
 koch.nim          |  4 ++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/compiler/deps.nim b/compiler/deps.nim
index 116c0ebdf3..cfe0f0975f 100644
--- a/compiler/deps.nim
+++ b/compiler/deps.nim
@@ -488,10 +488,19 @@ proc generateBuildFile(c: DepContext): string =
   let exeFile = changeFileExt(c.nodes[0].files[0].nimFile, ExeExt)
   b.addTree "do"
   b.addIdent "nim_nifc"
-  # Input: .nim file (expanded as argument) and .nif file (dependency)
+  # Input: .nim file (expanded as argument)
   b.addTree "input"
   b.addStrLit mainNif
   b.endTree()
+  # Also depend on the semmed .nif files of the main module and all its
+  # dependencies. nifmake's topological sort orders nodes by depth; without
+  # these inputs the nim_nifc node sits at depth 1 (no recognized inputs)
+  # alongside the nifler nodes and runs *before* the nim_m steps that
+  # produce the .nif files it needs to read.
+  for node in c.nodes:
+    b.addTree "input"
+    b.addStrLit c.semmedFile(node.files[0])
+    b.endTree()
   b.addTree "output"
   b.addStrLit exeFile
   b.endTree()
diff --git a/doc/ic.md b/doc/ic.md
index 9027f8ba63..9fd7b55d2b 100644
--- a/doc/ic.md
+++ b/doc/ic.md
@@ -33,7 +33,7 @@ The text representation is particularly valuable for debugging and introspection
 Each ``.nim`` module produces its own ``.nif`` file during compilation.
 The NIF format contains:
 
-- **Header** - Version information (e.g., `(.nif26)`)
+- **Header** - Version information (e.g., `(.nif27)`)
 - **Dependencies** - List of source files and dependencies
 - **Interface** - Exported symbols and their indices
 - **Body** - The intermediate representation of the module's code in Lisp-like syntax
diff --git a/koch.nim b/koch.nim
index c9269303b1..0ea083fb26 100644
--- a/koch.nim
+++ b/koch.nim
@@ -16,11 +16,11 @@ const
   ChecksumsStableCommit = "0b8e46379c5bc1bf73d8b3011908389c60fb9b98" # 2.0.1
   SatStableCommit = "e63eaea8baf00bed8bcd5a29ffd8823abb265b39"
 
-  NimonyStableCommit = "c189ef438598878b2f02f6a2ff91d08febafc04b" # unversioned \
+  NimonyStableCommit = "750aa47f2139fe5ad69f04b44428b752011fe873" # unversioned \
     # Note that Nimony uses Nim as a git submodule but we don't want to install
     # Nimony's dependency to Nim as we are Nim. So a `git clone` without --recursive
     # is **required** here.
-    # Commit from 2026-04-27
+    # Commit from 2026-05-05
 
   # examples of possible values for fusion: #head, #ea82b54, 1.2.3
   FusionStableHash = "#562467452b32cb7a97410ea177f083e6d8405734"