Index

Symbols

--allow-boot-library-installs cabal project option --allow-newer cabal project option command line option --allow-older cabal project option command line option --augment command line option --benchmark-option runhaskell-Setup.hs-test command line option --benchmark-options runhaskell-Setup.hs-test command line option --bindir runhaskell-Setup.hs-configure command line option --build-depends command line option --build-summary cabal project option --builddir command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option runhaskell-Setup.hs-test command line option --cabal-lib-version cabal project option --cid runhaskell-Setup.hs-configure command line option --compiler cabal project option --config-file command line option --configure-option cabal project option runhaskell-Setup.hs-configure command line option --constraint cabal project option runhaskell-Setup.hs-configure command line option --count-conflicts cabal project option --css runhaskell-Setup.hs-haddock command line option runhaskell-Setup.hs-hscolour command line option --datadir runhaskell-Setup.hs-configure command line option --datasubdir runhaskell-Setup.hs-configure command line option --default-user-config command line option --dependency runhaskell-Setup.hs-configure command line option --destdir command line option runhaskell-Setup.hs-copy command line option --disable-benchmarks cabal project option command line option --disable-build-info cabal project option command line option --disable-coverage cabal project option runhaskell-Setup.hs-configure command line option --disable-debug-info cabal project option --disable-documentation cabal project option --disable-executable-dynamic cabal project option runhaskell-Setup.hs-configure command line option --disable-executable-profiling cabal project option --disable-executable-static cabal project option runhaskell-Setup.hs-configure command line option --disable-executable-stripping cabal project option runhaskell-Setup.hs-configure command line option --disable-library-coverage cabal project option --disable-library-for-ghci cabal project option runhaskell-Setup.hs-configure command line option --disable-library-profiling cabal project option runhaskell-Setup.hs-configure command line option --disable-library-stripping cabal project option --disable-library-vanilla cabal project option runhaskell-Setup.hs-configure command line option --disable-multi-repl command line option --disable-optimization cabal project option runhaskell-Setup.hs-configure command line option --disable-profiling cabal project option runhaskell-Setup.hs-configure command line option --disable-profiling-shared runhaskell-Setup.hs-configure command line option --disable-response-files runhaskell-Setup.hs-configure command line option --disable-shared cabal project option runhaskell-Setup.hs-configure command line option --disable-split-objs cabal project option runhaskell-Setup.hs-configure command line option --disable-split-sections cabal project option --disable-static cabal project option runhaskell-Setup.hs-configure command line option --disable-tests cabal project option command line option runhaskell-Setup.hs-configure command line option --doc-index-file cabal project option --docdir runhaskell-Setup.hs-configure command line option --documentation command line option --dry-run command line option --dynlibdir runhaskell-Setup.hs-configure command line option --enable-benchmarks cabal project option --enable-build-info cabal project option command line option --enable-coverage cabal project option runhaskell-Setup.hs-configure command line option --enable-debug-info[ cabal project option --enable-documentation cabal project option --enable-executable-dynamic cabal project option runhaskell-Setup.hs-configure command line option --enable-executable-profiling cabal project option --enable-executable-static cabal project option runhaskell-Setup.hs-configure command line option --enable-executable-stripping cabal project option runhaskell-Setup.hs-configure command line option --enable-library-coverage cabal project option --enable-library-for-ghci cabal project option runhaskell-Setup.hs-configure command line option --enable-library-profiling cabal project option runhaskell-Setup.hs-configure command line option --enable-library-stripping cabal project option --enable-library-vanilla cabal project option runhaskell-Setup.hs-configure command line option --enable-multi-repl command line option --enable-optimization runhaskell-Setup.hs-configure command line option --enable-profiling cabal project option runhaskell-Setup.hs-configure command line option --enable-profiling-shared runhaskell-Setup.hs-configure command line option --enable-shared cabal project option runhaskell-Setup.hs-configure command line option --enable-split-objs cabal project option runhaskell-Setup.hs-configure command line option --enable-split-sections cabal project option --enable-static cabal project option runhaskell-Setup.hs-configure command line option --enable-tests cabal project option runhaskell-Setup.hs-configure command line option --exact-configuration runhaskell-Setup.hs-configure command line option --executables runhaskell-Setup.hs-haddock command line option runhaskell-Setup.hs-hscolour command line option --exit-code command line option --extra-framework-dirs cabal project option runhaskell-Setup.hs-configure command line option --extra-include-dirs cabal project option runhaskell-Setup.hs-configure command line option --extra-lib-dirs cabal project option runhaskell-Setup.hs-configure command line option --extra-prog-path cabal project option --fine-grained-conflicts cabal project option --flags cabal project option runhaskell-Setup.hs-configure command line option --force command line option --freeze-file command line option --gen-pkg-config runhaskell-Setup.hs-register command line option --gen-script runhaskell-Setup.hs-register command line option runhaskell-Setup.hs-unregister command line option --ghc runhaskell-Setup.hs-configure command line option --ghcjs runhaskell-Setup.hs-configure command line option --global runhaskell-Setup.hs-configure command line option runhaskell-Setup.hs-install command line option runhaskell-Setup.hs-register command line option runhaskell-Setup.hs-unregister command line option --haddock-all cabal project option --haddock-benchmarks cabal project option --haddock-contents-location cabal project option --haddock-css cabal project option --haddock-executables cabal project option --haddock-hoogle cabal project option --haddock-hscolour-css cabal project option --haddock-html cabal project option --haddock-html-location cabal project option --haddock-hyperlink-source cabal project option --haddock-internal cabal project option --haddock-output-dir cabal project option --haddock-quickjump cabal project option --haddock-resources-dir cabal project option --haddock-tests cabal project option --haddock-use-unicode cabal project option --haskell-suite runhaskell-Setup.hs-configure command line option --help setup command line option --hoogle runhaskell-Setup.hs-haddock command line option

--hscolour-css runhaskell-Setup.hs-haddock command line option --html-location runhaskell-Setup.hs-haddock command line option --htmldir runhaskell-Setup.hs-configure command line option --http-transport cabal project option --hyperlink-source runhaskell-Setup.hs-haddock command line option --ignore command line option, [1] --ignore-case command line option --ignore-expiry cabal project option --ignore-project command line option --index-state command line option --inplace runhaskell-Setup.hs-register command line option --installed command line option --interactive command line option --internal runhaskell-Setup.hs-haddock command line option --ipid runhaskell-Setup.hs-configure command line option --keep-going cabal project option --libdir runhaskell-Setup.hs-configure command line option --libexecdir runhaskell-Setup.hs-configure command line option --libexecsubdir runhaskell-Setup.hs-configure command line option --library-profiling-detail cabal project option runhaskell-Setup.hs-configure command line option --libsubdir runhaskell-Setup.hs-configure command line option --list-only command line option --logs-dir cabal project option --max-backjumps cabal project option --minimal command line option --minimize-conflict-set cabal project option --minor[PKGS] command line option --no-allow-boot-library-installs cabal project option --no-count-conflicts cabal project option --no-dependencies command line option --no-fine-grained-conflicts cabal project option --no-minimize-conflict-set cabal project option --no-prefer-oldest cabal project option --no-reorder-goals cabal project option --no-semaphore cabal project option --no-strong-flags cabal project option --null-sep command line option --only-configure command line option, [1] --only-dependencies command line option --only-download command line option --only-package-description command line option --open cabal project option --output-directory command line option --package-db cabal project option command line option, [1] runhaskell-Setup.hs-configure command line option --package-description-only command line option --password command line option, [1] --password-command command line option --prefer-oldest cabal project option --preference cabal project option command line option --prefix runhaskell-Setup.hs-configure command line option --pristine command line option --profiling-detail cabal project option runhaskell-Setup.hs-configure command line option --PROG-option runhaskell-Setup.hs-build command line option runhaskell-Setup.hs-configure command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --PROG-options runhaskell-Setup.hs-build command line option runhaskell-Setup.hs-configure command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --program-prefix cabal project option runhaskell-Setup.hs-configure command line option --program-suffix cabal project option runhaskell-Setup.hs-configure command line option --project-dir command line option --project-file command line option, [1] --promised-dependency runhaskell-Setup.hs-configure command line option --publish command line option --quiet command line option --reject-unconstrained-dependencies cabal project option --relocatable cabal project option --remote-repo-cache cabal project option --reorder-goals cabal project option --repl-no-load command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --repl-options command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --run-tests cabal project option --save-configure runhaskell-Setup.hs-clean command line option --semaphore cabal project option --simple-output command line option, [1] --snapshot runhaskell-Setup.hs-sdist command line option --solver cabal project option --source-repository command line option --store-dir command line option --strict-case command line option --strong-flags cabal project option --sysconfdir runhaskell-Setup.hs-configure command line option --test-log runhaskell-Setup.hs-test command line option --test-machine-log runhaskell-Setup.hs-test command line option --test-option runhaskell-Setup.hs-test command line option --test-options runhaskell-Setup.hs-test command line option --test-show-details runhaskell-Setup.hs-test command line option --test-wrapper runhaskell-Setup.hs-test command line option --token command line option, [1] --uhc runhaskell-Setup.hs-configure command line option --user runhaskell-Setup.hs-configure command line option runhaskell-Setup.hs-install command line option runhaskell-Setup.hs-register command line option runhaskell-Setup.hs-unregister command line option --username command line option, [1] --v2-freeze-file command line option --verbose command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option setup command line option --with-compiler command line option runhaskell-Setup.hs-configure command line option --with-hc-pkg cabal project option runhaskell-Setup.hs-configure command line option --with-PROG runhaskell-Setup.hs-configure command line option runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --write-ghc-environment-files cabal project option -a command line option -b command line option -c cabal project option runhaskell-Setup.hs-configure command line option -d command line option, [1] -f cabal project option command line option runhaskell-Setup.hs-configure command line option -g runhaskell-Setup.hs-configure command line option -h setup command line option -I command line option -i command line option, [1], [2] -j[NUM] cabal project option -l command line option -m command line option -o command line option -O[n] cabal project option runhaskell-Setup.hs-configure command line option -P command line option -p command line option, [1] runhaskell-Setup.hs-configure command line option -q command line option -s runhaskell-Setup.hs-clean command line option -s[[head|this|...]] command line option -t command line option, [1] -u command line option, [1] -v runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option -v[n] cabal project option command line option -w cabal project option command line option runhaskell-Setup.hs-configure command line option -z command line option

A

active-repositories cabal project option allow-boot-library-installs cabal project option allow-newer cabal project option allow-older cabal project option asm-options package.cabal field

asm-sources package.cabal field author package.cabal field autogen-includes package.cabal field autogen-modules package.cabal field

B

benchmark:benchmark package.cabal section benchmark:main-is package.cabal field benchmark:type package.cabal field benchmarks cabal project option branch cabal project option bug-reports package.cabal field build-depends package.cabal field

build-info cabal project option build-summary cabal project option build-tool-depends package.cabal field build-tools package.cabal field build-type package.cabal field buildable package.cabal field

C

c-sources package.cabal field cabal project option --allow-boot-library-installs --allow-newer --allow-older --build-summary --cabal-lib-version --compiler --configure-option --constraint --count-conflicts --disable-benchmarks --disable-build-info --disable-coverage --disable-debug-info --disable-documentation --disable-executable-dynamic --disable-executable-profiling --disable-executable-static --disable-executable-stripping --disable-library-coverage --disable-library-for-ghci --disable-library-profiling --disable-library-stripping --disable-library-vanilla --disable-optimization --disable-profiling --disable-shared --disable-split-objs --disable-split-sections --disable-static --disable-tests --doc-index-file --enable-benchmarks --enable-build-info --enable-coverage --enable-debug-info[ --enable-documentation --enable-executable-dynamic --enable-executable-profiling --enable-executable-static --enable-executable-stripping --enable-library-coverage --enable-library-for-ghci --enable-library-profiling --enable-library-stripping --enable-library-vanilla --enable-profiling --enable-shared --enable-split-objs --enable-split-sections --enable-static --enable-tests --extra-framework-dirs --extra-include-dirs --extra-lib-dirs --extra-prog-path --fine-grained-conflicts --flags --haddock-all --haddock-benchmarks --haddock-contents-location --haddock-css --haddock-executables --haddock-hoogle --haddock-hscolour-css --haddock-html --haddock-html-location --haddock-hyperlink-source --haddock-internal --haddock-output-dir --haddock-quickjump --haddock-resources-dir --haddock-tests --haddock-use-unicode --http-transport --ignore-expiry --keep-going --library-profiling-detail --logs-dir --max-backjumps --minimize-conflict-set --no-allow-boot-library-installs --no-count-conflicts --no-fine-grained-conflicts --no-minimize-conflict-set --no-prefer-oldest --no-reorder-goals --no-semaphore --no-strong-flags --open --package-db --prefer-oldest --preference --profiling-detail --program-prefix --program-suffix --reject-unconstrained-dependencies --relocatable --remote-repo-cache --reorder-goals --run-tests --semaphore --solver --strong-flags --with-hc-pkg --write-ghc-environment-files -c -f -j[NUM] -O[n] -v[n] -w active-repositories allow-boot-library-installs allow-newer allow-older benchmarks branch build-info build-summary cabal-lib-version compiler configure-options constraints count-conflicts coverage debug-info doc-index-file documentation executable-dynamic executable-profiling executable-static executable-stripping extra-framework-dirs extra-include-dirs extra-lib-dirs extra-packages extra-prog-path fine-grained-conflicts flags haddock-all haddock-benchmarks haddock-contents-location haddock-css haddock-executables haddock-hoogle haddock-hscolour-css haddock-html haddock-html-location haddock-hyperlink-source haddock-internal haddock-keep-temp-files haddock-output-dir haddock-quickjump haddock-resources-dir haddock-tests haddock-use-unicode http-transport ignore-expiry index-state jobs keep-going library-coverage library-for-ghci library-profiling library-profiling-detail library-stripping library-vanilla location logs-dir max-backjumps minimize-conflict-set open optimization optional-packages package-dbs packages post-checkout-command prefer-oldest preferences profiling profiling-detail program-prefix program-suffix reject-unconstrained-dependencies relocatable remote-repo-cache reorder-goals run-tests semaphore shared solver split-objs split-sections static strong-flags subdir tag tests type verbose with-compiler with-hc-pkg write-ghc-environment-files

cabal-lib-version cabal project option cabal-version package.cabal field cabal.project section package:package program-options:program-options category package.cabal field cc-options package.cabal field cmm-options package.cabal field cmm-sources package.cabal field command line option --allow-newer --allow-older --augment --build-depends --builddir --config-file --default-user-config --destdir --disable-benchmarks --disable-build-info --disable-multi-repl --disable-tests --documentation --dry-run --enable-build-info --enable-multi-repl --exit-code --force --freeze-file --ignore, [1] --ignore-case --ignore-project --index-state --installed --interactive --list-only --minimal --minor[PKGS] --no-dependencies --null-sep --only-configure, [1] --only-dependencies --only-download --only-package-description --output-directory --package-db, [1] --package-description-only --password, [1] --password-command --preference --pristine --project-dir --project-file, [1] --publish --quiet --repl-no-load --repl-options --simple-output, [1] --source-repository --store-dir --strict-case --token, [1] --username, [1] --v2-freeze-file --verbose --with-compiler -a -b -d, [1] -f -i, [1], [2] -I -l -m -o -p, [1] -P -q -s[[head|this|...]] -t, [1] -u, [1] -v[n] -w -z common:common package.cabal section compiler cabal project option configure-options cabal project option constraints cabal project option copyright package.cabal field count-conflicts cabal project option coverage cabal project option cpp-options package.cabal field custom-setup:custom-setup package.cabal section custom-setup:setup-depends package.cabal field cxx-options package.cabal field cxx-sources package.cabal field

D

data-dir package.cabal field data-files package.cabal field debug-info cabal project option default-extensions package.cabal field

default-language package.cabal field description package.cabal field doc-index-file cabal project option documentation cabal project option

E

executable-dynamic cabal project option executable-profiling cabal project option executable-static cabal project option executable-stripping cabal project option executable:executable package.cabal section executable:main-is package.cabal field executable:scope package.cabal field extensions package.cabal field extra-bundled-libraries package.cabal field extra-doc-files package.cabal field extra-dynamic-library-flavours package.cabal field extra-files package.cabal field extra-framework-dirs cabal project option package.cabal field

extra-ghci-libraries package.cabal field extra-include-dirs cabal project option extra-lib-dirs cabal project option package.cabal field extra-lib-dirs-static package.cabal field extra-libraries package.cabal field extra-libraries-static package.cabal field extra-library-flavours package.cabal field extra-packages cabal project option extra-prog-path cabal project option extra-source-files package.cabal field extra-tmp-files package.cabal field

F

fine-grained-conflicts cabal project option flag:default package.cabal field flag:description package.cabal field flag:flag package.cabal section flag:manual package.cabal field flags cabal project option foreign-library:foreign-library package.cabal section

foreign-library:lib-version-info package.cabal field foreign-library:lib-version-linux package.cabal field foreign-library:mod-def-file package.cabal field foreign-library:options package.cabal field foreign-library:type package.cabal field frameworks package.cabal field

G

ghc-options package.cabal field ghc-prof-options package.cabal field ghc-prof-shared-options package.cabal field ghc-shared-options package.cabal field

ghcjs-options package.cabal field ghcjs-prof-options package.cabal field ghcjs-prof-shared-options package.cabal field ghcjs-shared-options package.cabal field

H

haddock-all cabal project option haddock-benchmarks cabal project option haddock-contents-location cabal project option haddock-css cabal project option haddock-executables cabal project option haddock-hoogle cabal project option haddock-hscolour-css cabal project option haddock-html cabal project option haddock-html-location cabal project option haddock-hyperlink-source cabal project option haddock-internal cabal project option

haddock-keep-temp-files cabal project option haddock-output-dir cabal project option haddock-quickjump cabal project option haddock-resources-dir cabal project option haddock-tests cabal project option haddock-use-unicode cabal project option homepage package.cabal field hs-source-dir package.cabal field hs-source-dirs package.cabal field hsc2hs-options package.cabal field http-transport cabal project option

I

ignore-expiry cabal project option import package.cabal field include-dirs package.cabal field

includes package.cabal field index-state cabal project option install-includes package.cabal field

J

jobs cabal project option

js-sources package.cabal field

K

keep-going cabal project option

L

ld-options package.cabal field library-coverage cabal project option library-for-ghci cabal project option library-profiling cabal project option library-profiling-detail cabal project option library-stripping cabal project option library-vanilla cabal project option library:exposed package.cabal field library:exposed-modules package.cabal field library:library package.cabal section

library:reexported-modules package.cabal field library:signatures package.cabal field library:virtual-modules package.cabal field library:visibility package.cabal field license package.cabal field license-file package.cabal field license-files package.cabal field location cabal project option logs-dir cabal project option

M

maintainer package.cabal field max-backjumps cabal project option

minimize-conflict-set cabal project option mixins package.cabal field

N

name package.cabal field

O

open cabal project option optimization cabal project option optional-packages cabal project option

other-extensions package.cabal field other-languages package.cabal field other-modules package.cabal field

P

package-dbs cabal project option package-url package.cabal field package.cabal field asm-options asm-sources author autogen-includes autogen-modules benchmark:main-is benchmark:type bug-reports build-depends build-tool-depends build-tools build-type buildable c-sources cabal-version category cc-options cmm-options cmm-sources copyright cpp-options custom-setup:setup-depends cxx-options cxx-sources data-dir data-files default-extensions default-language description executable:main-is executable:scope extensions extra-bundled-libraries extra-doc-files extra-dynamic-library-flavours extra-files extra-framework-dirs extra-ghci-libraries extra-lib-dirs extra-lib-dirs-static extra-libraries extra-libraries-static extra-library-flavours extra-source-files extra-tmp-files flag:default flag:description flag:manual foreign-library:lib-version-info foreign-library:lib-version-linux foreign-library:mod-def-file foreign-library:options foreign-library:type frameworks ghc-options ghc-prof-options ghc-prof-shared-options ghc-shared-options ghcjs-options ghcjs-prof-options ghcjs-prof-shared-options ghcjs-shared-options homepage hs-source-dir hs-source-dirs hsc2hs-options import include-dirs includes install-includes js-sources ld-options library:exposed library:exposed-modules library:reexported-modules library:signatures library:virtual-modules library:visibility license license-file license-files maintainer mixins name other-extensions other-languages other-modules package-url pkgconfig-depends source-repository:branch source-repository:location source-repository:module source-repository:subdir source-repository:tag source-repository:type stability synopsis test-suite:code-generators test-suite:main-is test-suite:test-module test-suite:type tested-with version

package.cabal section benchmark:benchmark common:common custom-setup:custom-setup executable:executable flag:flag foreign-library:foreign-library library:library source-repository:source-repository test-suite:test-suite package:package cabal.project section PackageInfo PackageInfo_ packages cabal project option Paths Paths_ pkgconfig-depends package.cabal field post-checkout-command cabal project option prefer-oldest cabal project option preferences cabal project option profiling cabal project option profiling-detail cabal project option program-options:program-options cabal.project section program-prefix cabal project option program-suffix cabal project option

R

reject-unconstrained-dependencies cabal project option relocatable cabal project option remote-repo-cache cabal project option reorder-goals cabal project option run-tests cabal project option runhaskell-Setup.hs-build command line option --PROG-option --PROG-options runhaskell-Setup.hs-clean command line option --save-configure -s runhaskell-Setup.hs-configure command line option --bindir --cid --configure-option --constraint --datadir --datasubdir --dependency --disable-coverage --disable-executable-dynamic --disable-executable-static --disable-executable-stripping --disable-library-for-ghci --disable-library-profiling --disable-library-vanilla --disable-optimization --disable-profiling --disable-profiling-shared --disable-response-files --disable-shared --disable-split-objs --disable-static --disable-tests --docdir --dynlibdir --enable-coverage --enable-executable-dynamic --enable-executable-static --enable-executable-stripping --enable-library-for-ghci --enable-library-profiling --enable-library-vanilla --enable-optimization --enable-profiling --enable-profiling-shared --enable-shared --enable-split-objs --enable-static --enable-tests --exact-configuration --extra-framework-dirs --extra-include-dirs --extra-lib-dirs --flags --ghc --ghcjs --global --haskell-suite --htmldir --ipid --libdir --libexecdir --libexecsubdir --library-profiling-detail --libsubdir --package-db --prefix --profiling-detail --PROG-option --PROG-options --program-prefix --program-suffix --promised-dependency --sysconfdir --uhc --user --with-compiler --with-hc-pkg --with-PROG -c -f -g -O[n] -p -w

runhaskell-Setup.hs-copy command line option --destdir runhaskell-Setup.hs-haddock command line option --css --executables --hoogle --hscolour-css --html-location --hyperlink-source --internal runhaskell-Setup.hs-hscolour command line option --css --executables runhaskell-Setup.hs-install command line option --global --user runhaskell-Setup.hs-register command line option --gen-pkg-config --gen-script --global --inplace --user runhaskell-Setup.hs-repl-[COMPONENT]-[FLAGS] command line option --builddir --PROG-option --PROG-options --repl-no-load --repl-options --verbose --with-PROG -v runhaskell-Setup.hs-sdist command line option --snapshot runhaskell-Setup.hs-test command line option --benchmark-option --benchmark-options --builddir --test-log --test-machine-log --test-option --test-options --test-show-details --test-wrapper runhaskell-Setup.hs-unregister command line option --gen-script --global --user

S

semaphore cabal project option setup command line option --help --verbose -h shared cabal project option solver cabal project option source-repository:branch package.cabal field source-repository:location package.cabal field source-repository:module package.cabal field source-repository:source-repository package.cabal section source-repository:subdir package.cabal field

source-repository:tag package.cabal field source-repository:type package.cabal field split-objs cabal project option split-sections cabal project option stability package.cabal field static cabal project option strong-flags cabal project option subdir cabal project option synopsis package.cabal field

T

tag cabal project option test-suite:code-generators package.cabal field test-suite:main-is package.cabal field test-suite:test-module package.cabal field test-suite:test-suite package.cabal section

test-suite:type package.cabal field tested-with package.cabal field tests cabal project option type cabal project option

V

verbose cabal project option

version package.cabal field

W

with-compiler cabal project option with-hc-pkg cabal project option

write-ghc-environment-files cabal project option