I've been running into a build failure with ghc-lib-parser-9.12.2.20250421, where on a fresh docker image I get
*** Exception: compiler/GHC/Parser.y: hGetContents: invalid argument (cannot decode byte sequence starting from 226`:
The locale on this image is:
LANG=
LANGUAGE=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=
Setting LC_ALL=C.UTF-8 gets rid of the error, but since Haskell source files (and transitively happy files) are specified to be UTF-8, I wonder if the right thing to do could be to explicitly set the encoding for both happy input and output to UTF-8.
I've been running into a build failure with ghc-lib-parser-9.12.2.20250421, where on a fresh docker image I get
The locale on this image is:
Setting
LC_ALL=C.UTF-8gets rid of the error, but since Haskell source files (and transitively happy files) are specified to be UTF-8, I wonder if the right thing to do could be to explicitly set the encoding for both happy input and output to UTF-8.