From 81f7e25dcf6a91fc407320c0172d8e634e518df2 Mon Sep 17 00:00:00 2001
From: Pablo Lamela <pablo.lamela@iohk.io>
Date: Tue, 28 Apr 2026 15:17:59 +0200
Subject: [PATCH 1/2] Remove SRP for `haskell-lmdb-mock`

---
 ...o-wasm_pablo.lamela_remove_srp_for_haskell_lmdb_mock.yml | 5 +++++
 cabal.project                                               | 6 ------
 2 files changed, 5 insertions(+), 6 deletions(-)
 create mode 100644 .changes/20260428_132126_cardano-wasm_pablo.lamela_remove_srp_for_haskell_lmdb_mock.yml

diff --git a/.changes/20260428_132126_cardano-wasm_pablo.lamela_remove_srp_for_haskell_lmdb_mock.yml b/.changes/20260428_132126_cardano-wasm_pablo.lamela_remove_srp_for_haskell_lmdb_mock.yml
new file mode 100644
index 0000000000..1057be12a8
--- /dev/null
+++ b/.changes/20260428_132126_cardano-wasm_pablo.lamela_remove_srp_for_haskell_lmdb_mock.yml
@@ -0,0 +1,5 @@
+description: Removed SRP for `haskell-lmdb-mock` which is no longer needed.
+kind:
+- maintenance
+pr: 1192
+project: cardano-wasm
diff --git a/cabal.project b/cabal.project
index 6bc4498438..18a24d5419 100644
--- a/cabal.project
+++ b/cabal.project
@@ -94,12 +94,6 @@ if arch(wasm32)
       criterion-measurement
     --sha256: sha256-wzEwOUTeFL0C3QnS25/3X1ue2tUuedrLqtT0h1JZW6c=
 
-  source-repository-package
-    type: git
-    location: https://github.com/palas/haskell-lmdb-mock.git
-    tag: c8d61e6eee03ee271e7768c0576110da885aec48
-    --sha256: sha256-+gB1MmM6qRApz1p7tFsdvKoAWDrYB4a+bJ9Djm6ieYI=
-
   source-repository-package
     type: git
     location: https://github.com/palas/double-conversion.git

From 9130bd0eed582a5f29527aa02981d0987d2fdb26 Mon Sep 17 00:00:00 2001
From: Pablo Lamela <pablo.lamela@iohk.io>
Date: Tue, 28 Apr 2026 16:21:45 +0200
Subject: [PATCH 2/2] Workaround to not build `cardano-lmdb` but still resolve

---
 flake.nix | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/flake.nix b/flake.nix
index f2848fd0b7..c523c97901 100644
--- a/flake.nix
+++ b/flake.nix
@@ -294,6 +294,19 @@
                 src = nixpkgs.blst.src;
               });
           };
+          # Stub pkg-config file so the cabal solver can resolve
+          # cardano-lmdb (a transitive dependency of ouroboros-consensus
+          # that nothing in this project actually needs). Without this,
+          # the solver rejects cardano-lmdb because lmdb is not
+          # available for wasm. Per-component builds ensure it is never
+          # actually compiled.
+          lmdb-pkg-config-stub = wasm-pkgs.writeTextDir "lib/pkgconfig/lmdb.pc" ''
+            Name: lmdb
+            Description: Stub for cabal solver — not actually built
+            Version: 0.9.33
+            Libs: -llmdb
+            Cflags:
+          '';
         in
           lib.optionalAttrs (system != "x86_64-darwin") {
             wasm = wasm-pkgs.mkShell {
@@ -308,6 +321,7 @@
                   wasm.libsodium
                   wasm.secp256k1
                   wasm.blst
+                  lmdb-pkg-config-stub
                 ]
                 ++ lib.optional (system == "x86_64-linux" || system == "aarch64-linux") wasm-pkgs.envoy-bin;
             };