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fix: remove dead flat serialization code

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fix: remove dead flat serialization code #7632

fix: remove dead flat serialization code
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IOG Hydra / ci/hydra-build:x86_64-linux.ghc96:packages:plutus-benchmark:test:certifier-test failed Feb 28, 2026 in 0s

Build dependency failed

1 failed steps

Details

Failed Steps

Step 1

Derivation

/nix/store/0vxh04g2g7b2m6hgrsqlvxzajp0v8g7j-plutus-core-lib-flat-1.58.0.0.drv

Log

Running phase: unpackPhase
unpacking source archive /nix/store/6k849l78dvm9f0bb25cx20f8wdl6bjgi-source-plutus-core-lib-flat-root
source root is source-plutus-core-lib-flat-root
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
Configure flags:
--prefix=/nix/store/pzprdi1l0iwl4f5gc6dy50d06d4lk15m-plutus-core-lib-flat-1.58.0.0 lib:flat --package-db=clear --package-db=/build/tmp.bk0QsfU86q/lib/ghc-9.6.7/lib/package.conf.d --flags=with-cert --flags=with-inline-r --exact-configuration --dependency=dlist=dlist-1.0-2hTtgfcMjYnK5ageOgmEVo --dependency=hashable=hashable-1.5.1.0-K78yl3FAjM4EEtjNRYQgYV --dependency=os-string=os-string-2.0.10-Cz1cZTSHynmDdbqlFgLdgx --dependency=list-t=list-t-1.0.5.7-FPEsc3tmfV9Kf3M9Vtz2uE --dependency=foldl=foldl-1.4.18-1VrvBjUOZwo8Pyde5km3QH --dependency=comonad=comonad-5.0.10-FBp2IVENSuh66wK30WmWIm --dependency=distributive=distributive-0.6.3-HnRsmXARdZu4V5H5cfpZbf --dependency=tagged=tagged-0.8.10-FMmPMLs02yWLsKgKNZhWPA --dependency=indexed-traversable=indexed-traversable-0.1.4-4WgKtUu7swysftQ0x7OdR --dependency=contravariant=contravariant-1.5.6-H2cxrWCC96e6y8PhBqJVn7 --dependency=StateVar=StateVar-1.2.2-E0yfTmnQDKI1BXBWlDfERx --dependency=primitive=primitive-0.9.1.0-AElAOg7RWPrK8TD1mt4mft --dependency=profunctors=profunctors-5.6.3-DKfM1BPlBpuWl1sM5L4Tr --dependency=base-orphans=base-orphans-0.9.4-3rdzD4qYerw9LLBLUyFodR --dependency=bifunctors=bifunctors-5.6.3-kvwPwMqDCk9ZZOWaqV4OY --dependency=assoc=assoc-1.1.1-Hk0NF38QxbfFWQZTs5YYxb --dependency=th-abstraction=th-abstraction-0.6.0.0-AIAgi0BLP8bBFLwGO1orLh --dependency=random=random-1.3.1-JTAoDS03FOs7ApbcZAzDFu --dependency=splitmix=splitmix-0.1.3.2-HU0s4PpA6NH8FEFBhLbejd --dependency=semigroupoids=semigroupoids-6.0.2-DR8gB9B5Gt76fSR1Hdozof --dependency=transformers-compat=transformers-compat-0.7.2-Gt8KxspbTpUIHfKPq3SCp6 --dependency=unordered-containers=unordered-containers-0.2.21-8HSGHPdto263yAaR0CrKdt --dependency=vector=vector-0.13.2.0-EuyJviusT5v6Iyho9D6sFZ --dependency=vector-stream=vector-stream-0.1.0.1-7qX9oQxWHCz9yDWW5CqJnq --dependency=logict=logict-0.8.2.0-6Hxc6OMRFj2N1ib4jymnn --dependency=mmorph=mmorph-1.2.2-1rRO80jomHP2sDS3LXpTCI --dependency=monad-control=monad-control-1.0.3.1-DXEvj560bJC3ZAz99tDEhN --dependency=transformers-base=transformers-base-0.4.6-BJFyqrSbklCAcKagPras0J --dependency=mono-traversable=mono-traversable-1.0.21.0-XXjTLgsTNLCodhPXMuXFS --dependency=split=split-0.2.5-25b5lWhNmv9Oaxvt4uo0e --dependency=vector-algorithms=vector-algorithms-0.9.1.0-8tvxCH32incD46BUGXFbno --dependency=bitvec=bitvec-1.1.5.0-C8wcXRsqvns9xEZJiYYoRZ --dependency=array=array-0.5.8.0 --dependency=base=base-4.18.3.0 --dependency=binary=binary-0.8.9.1 --dependency=bytestring=bytestring-0.11.5.4 --dependency=containers=containers-0.6.7 --dependency=deepseq=deepseq-1.4.8.1 --dependency=exceptions=exceptions-0.10.7 --dependency=filepath=filepath-1.4.301.0 --dependency=ghc-bignum=ghc-bignum-1.3 --dependency=ghc-boot-th=ghc-boot-th-9.6.7 --dependency=ghc-prim=ghc-prim-0.10.0 --dependency=integer-gmp=integer-gmp-1.1 --dependency=mtl=mtl-2.3.1 --dependency=pretty=pretty-1.1.3.6 --dependency=rts=rts-1.0.2 --dependency=stm=stm-2.5.1.0 --dependency=template-haskell=template-haskell-2.20.0.0 --dependency=text=text-2.0.2 --dependency=transformers=transformers-0.6.1.0 --with-ghc=ghc --with-ghc-pkg=ghc-pkg --with-hsc2hs=hsc2hs --with-gcc=cc --with-ar=ar --with-strip=strip --disable-executable-stripping --disable-library-stripping --disable-library-profiling --disable-profiling --enable-static --enable-shared --disable-executable-dynamic --disable-coverage --enable-library-for-ghci --datadir=/nix/store/r9aw02ixfrld1xfryqr1q83c6dncxhr5-plutus-core-lib-flat-1.58.0.0-data/share/ghc-9.6.7 --enable-split-sections --ghc-option=-D__GIT_REV__=\"d421554e5d2c49fb7b24b09844f35ae8769786f2\" --ghc-option=-D__GIT_COMMIT_DATE__=\"2026-02-28T13:16:30Z\" --ghc-options=-Werror 
Configuring library 'flat' for plutus-core-1.58.0.0...
Warning: [unknown-directory] 'hs-source-dirs: cost-model/budgeting-bench'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: cost-model/create-cost-model'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: cost-model/print-cost-model'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: cost-model/test' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: executables/plutus' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: executables/src' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: executables/traceToStacks'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: flat/test' specifies a directory
which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: index-envs/bench' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: index-envs/src' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: index-envs/test' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-core/examples' specifies
a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-core/src' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-core/stdlib' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-ir/cert' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-ir/src' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: plutus-ir/test' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: prelude' specifies a directory
which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: satint/src' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: satint/test' specifies a
directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: testlib' specifies a directory
which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: untyped-plutus-core/src'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: untyped-plutus-core/test'
specifies a directory which does not exist.
Warning: [unknown-directory] 'hs-source-dirs: untyped-plutus-core/testlib'
specifies a directory which does not exist.
Running phase: buildPhase
Preprocessing library 'flat' for plutus-core-1.58.0.0...
Building library 'flat' for plutus-core-1.58.0.0...
[ 1 of 37] Compiling PlutusCore.Flat.Data.ByteString.Convert ( flat/src/PlutusCore/Flat/Data/ByteString/Convert.hs, dist/build/flat/PlutusCore/Flat/Data/ByteString/Convert.o, dist/build/flat/PlutusCore/Flat/Data/ByteString/Convert.dyn_o )
[ 2 of 37] Compiling PlutusCore.Flat.Data.FloatCast ( flat/src/PlutusCore/Flat/Data/FloatCast.hs, dist/build/flat/PlutusCore/Flat/Data/FloatCast.o, dist/build/flat/PlutusCore/Flat/Data/FloatCast.dyn_o )
[ 3 of 37] Compiling PlutusCore.Flat.Data.ZigZag ( flat/src/PlutusCore/Flat/Data/ZigZag.hs, dist/build/flat/PlutusCore/Flat/Data/ZigZag.o, dist/build/flat/PlutusCore/Flat/Data/ZigZag.dyn_o )
[ 4 of 37] Compiling PlutusCore.Flat.Decoder.Types ( flat/src/PlutusCore/Flat/Decoder/Types.hs, dist/build/flat/PlutusCore/Flat/Decoder/Types.o, dist/build/flat/PlutusCore/Flat/Decoder/Types.dyn_o )
[ 5 of 37] Compiling PlutusCore.Flat.Endian ( flat/src/PlutusCore/Flat/Endian.hs, dist/build/flat/PlutusCore/Flat/Endian.o, dist/build/flat/PlutusCore/Flat/Endian.dyn_o )
[ 6 of 37] Compiling PlutusCore.Flat.Memory ( flat/src/PlutusCore/Flat/Memory.hs, dist/build/flat/PlutusCore/Flat/Memory.o, dist/build/flat/PlutusCore/Flat/Memory.dyn_o )
[ 7 of 37] Compiling PlutusCore.Flat.Decoder.Prim ( flat/src/PlutusCore/Flat/Decoder/Prim.hs, dist/build/flat/PlutusCore/Flat/Decoder/Prim.o, dist/build/flat/PlutusCore/Flat/Decoder/Prim.dyn_o )
[ 8 of 37] Compiling PlutusCore.Flat.Decoder.Strict ( flat/src/PlutusCore/Flat/Decoder/Strict.hs, dist/build/flat/PlutusCore/Flat/Decoder/Strict.o, dist/build/flat/PlutusCore/Flat/Decoder/Strict.dyn_o )
[ 9 of 37] Compiling PlutusCore.Flat.Decoder.Run ( flat/src/PlutusCore/Flat/Decoder/Run.hs, dist/build/flat/PlutusCore/Flat/Decoder/Run.o, dist/build/flat/PlutusCore/Flat/Decoder/Run.dyn_o )
[10 of 37] Compiling PlutusCore.Flat.Decoder ( flat/src/PlutusCore/Flat/Decoder.hs, dist/build/flat/PlutusCore/Flat/Decoder.o, dist/build/flat/PlutusCore/Flat/Decoder.dyn_o )
[11 of 37] Compiling PlutusCore.Flat.Tutorial ( flat/src/PlutusCore/Flat/Tutorial.hs, dist/build/flat/PlutusCore/Flat/Tutorial.o, dist/build/flat/PlutusCore/Flat/Tutorial.dyn_o )
[12 of 37] Compiling PlutusCore.Flat.Types ( flat/src/PlutusCore/Flat/Types.hs, dist/build/flat/PlutusCore/Flat/Types.o, dist/build/flat/PlutusCore/Flat/Types.dyn_o )
[13 of 37] Compiling PlutusCore.Flat.Encoder.Types ( flat/src/PlutusCore/Flat/Encoder/Types.hs, dist/build/flat/PlutusCore/Flat/Encoder/Types.o, dist/build/flat/PlutusCore/Flat/Encoder/Types.dyn_o )
[14 of 37] Compiling PlutusCore.Flat.Encoder.Prim ( flat/src/PlutusCore/Flat/Encoder/Prim.hs, dist/build/flat/PlutusCore/Flat/Encoder/Prim.o, dist/build/flat/PlutusCore/Flat/Encoder/Prim.dyn_o )
[15 of 37] Compiling PlutusCore.Flat.Encoder.Size ( flat/src/PlutusCore/Flat/Encoder/Size.hs, dist/build/flat/PlutusCore/Flat/Encoder/Size.o, dist/build/flat/PlutusCore/Flat/Encoder/Size.dyn_o )
[16 of 37] Compiling PlutusCore.Flat.Encoder.Strict ( flat/src/PlutusCore/Flat/Encoder/Strict.hs, dist/build/flat/PlutusCore/Flat/Encoder/Strict.o, dist/build/flat/PlutusCore/Flat/Encoder/Strict.dyn_o )
[17 of 37] Compiling PlutusCore.Flat.Encoder ( flat/src/PlutusCore/Flat/Encoder.hs, dist/build/flat/PlutusCore/Flat/Encoder.o, dist/build/flat/PlutusCore/Flat/Encoder.dyn_o )
[18 of 37] Compiling PlutusCore.Flat.Class ( flat/src/PlutusCore/Flat/Class.hs, dist/build/flat/PlutusCore/Flat/Class.o, dist/build/flat/PlutusCore/Flat/Class.dyn_o )

flat/src/PlutusCore/Flat/Class.hs:234:11: error: [GHC-58481]
    parse error on input ‘{-# INLINE’
    |
234 |           {-# INLINE getSum #-}
    |           ^^^^^^^^^^