cetin@unique:~/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr$ make
make loop CMD=run
make[1]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr'
for d in expr-eval expr-tree expr-monad hidden-leftrec highly-ambiguous packing nlp bio-eg; do (cd $d && make run); done
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-eval'
# might want to run happy with --ghc
ghc -I../common -i../common -package data -O -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-eval'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-tree'
# might want to run happy with --ghc
ghc -I../common -i../common -package data -O2 -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-tree'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-monad'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/expr-monad'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/hidden-leftrec'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/hidden-leftrec'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/highly-ambiguous'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/highly-ambiguous'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/packing'
Makefile:8: warning: overriding commands for target `.y.hs'
../Makefile.defs:15: warning: ignoring old commands for target `.y.hs'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/packing'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/nlp'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o english --make Main.lhs
<command line>: unknown package: data
make[2]: *** [english] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/nlp'
make[2]: Entering directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/bio-eg'
Making BioData.hs WITHOUT optimisation (for speed)
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -funfolding-use-threshold0 -fno-strictness -c BioData.hs
<command line>: unknown package: data
make[2]: *** [BioData.hi] Error 1
make[2]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr/bio-eg'
make[1]: *** [loop] Error 2
make[1]: Leaving directory `/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr'
make: *** [all] Error 2
cetin@unique:~/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr$ cabal update
Downloading the latest package list from hackage.haskell.org
cetin@unique:~/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr$ cabal install data
cabal: There is no package named data
cetin@unique:~/.cabal/packages/hackage.haskell.org/happy/1.18.4/happy-1.18.4/examples/glr$ happy --version; ghc --version
Happy Version 1.18.4 Copyright (c) 1993-1996 Andy Gill, Simon Marlow (c) 1997-2005 Simon Marlow

Happy is a Yacc for Haskell, and comes with ABSOLUTELY NO WARRANTY.
This program is free software; you can redistribute it and/or modify
it under the terms given in the file 'LICENSE' distributed with
the Happy sources.
The Glorious Glasgow Haskell Compilation System, version 6.10.3

cetin@sweethome:~/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr$ makemake loop CMD=run
make[1]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr'
for d in expr-eval expr-tree expr-monad hidden-leftrec highly-ambiguous packing nlp bio-eg; do (cd $d && make run); done
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-eval'
# might want to run happy with --ghc
ghc -I../common -i../common -package data -O -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-eval'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-tree'
# might want to run happy with --ghc
ghc -I../common -i../common -package data -O2 -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-tree'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-monad'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/expr-monad'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/hidden-leftrec'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/hidden-leftrec'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/highly-ambiguous'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/highly-ambiguous'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/packing'
Makefile:8: Warnung: Die Befehle für das Ziel ».y.hs« werden überschrieben
../Makefile.defs:15: Warnung: Alte Befehle für das Ziel ».y.hs« werden ignoriert
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o expr --make Main.lhs
<command line>: unknown package: data
make[2]: *** [expr] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/packing'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/nlp'
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -o english --make Main.lhs
<command line>: unknown package: data
make[2]: *** [english] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/nlp'
make[2]: Betrete Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/bio-eg'
Making BioData.hs WITHOUT optimisation (for speed)
ghc -I../common -i../common -package data -cpp -fglasgow-exts -package lang -funfolding-use-threshold0 -fno-strictness -c BioData.hs
<command line>: unknown package: data
make[2]: *** [BioData.hi] Fehler 1
make[2]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr/bio-eg'
make[1]: *** [loop] Fehler 2
make[1]: Verlasse Verzeichnis '/home/cetin/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr'
make: *** [all] Fehler 2
cetin@sweethome:~/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr$ happy --version; ghc --version
Happy Version 1.18.2 Copyright (c) 1993-1996 Andy Gill, Simon Marlow (c) 1997-2005 Simon Marlow

Happy is a Yacc for Haskell, and comes with ABSOLUTELY NO WARRANTY.
This program is free software; you can redistribute it and/or modify
it under the terms given in the file 'LICENSE' distributed with
the Happy sources.
The Glorious Glasgow Haskell Compilation System, version 6.10.1

cetin@sweethome:~/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr$ find | grep -E "y$" | xargs -n 1 echo happy -gcal
happy -gcal ./packing/Expr.y
happy -gcal ./highly-ambiguous/Expr.y
happy -gcal ./expr-eval/Expr.y
happy -gcal ./expr-monad/Expr.y
happy -gcal ./nlp/English.y
happy -gcal ./hidden-leftrec/Expr.y
happy -gcal ./expr-tree/Expr.y
happy -gcal ./bio-eg/Bio.y
cetin@sweethome:~/.cabal/packages/hackage.haskell.org/happy/1.18.2/happy-1.18.2/examples/glr$ find | grep -E "y$" | xargs -n 1 happy -gcal
reduce/reduce conflicts: 2
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 7
reduce/reduce conflicts: 1
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 9
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 9
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 2
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 4
reduce/reduce conflicts: 1
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

shift/reduce conflicts: 9
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)

unused rules: 20
shift/reduce conflicts: 35
reduce/reduce conflicts: 68
happy: src/ProduceGLRCode.lhs:190:11-76: Irrefutable pattern failed for pattern (pre, drop_me : post)