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|
{ config, lib, pkgs, ... }:
with config.krebs.lib;
rec {
execve = name: { filename, argv ? null, envp ? {}, destination ? "" }: let
in writeC name { inherit destination; } ''
#include <unistd.h>
static char *const filename = ${toC filename};
${if argv == null
then /* Propagate arguments */ ''
#define MAIN_ARGS int argc, char **argv
''
else /* Provide fixed arguments */ ''
#define MAIN_ARGS void
static char *const argv[] = ${toC (argv ++ [null])};
''}
static char *const envp[] = ${toC (
mapAttrsToList (k: v: "${k}=${v}") envp ++ [null]
)};
int main (MAIN_ARGS) {
execve(filename, argv, envp);
return -1;
}
'';
execveBin = name: cfg: execve name (cfg // { destination = "/bin/${name}"; });
writeC = name: { destination ? "" }: src: pkgs.runCommand name {} ''
PATH=${makeBinPath (with pkgs; [
binutils
coreutils
gcc
])}
src=${pkgs.writeText "${name}.c" src}
exe=$out${destination}
mkdir -p "$(dirname "$exe")"
gcc -O -Wall -o "$exe" $src
strip --strip-unneeded "$exe"
'';
writeDash = name: text: pkgs.writeScript name ''
#! ${pkgs.dash}/bin/dash
${text}
'';
writeDashBin = name: text: pkgs.writeTextFile {
executable = true;
destination = "/bin/${name}";
name = name;
text = ''
#! ${pkgs.dash}/bin/dash
${text}
'';
};
writeEximConfig = name: text: pkgs.runCommand name {
inherit text;
passAsFile = [ "text" ];
} ''
# TODO validate exim config even with config.nix.useChroot == true
# currently doing so will fail because "user exim was not found"
#${pkgs.exim}/bin/exim -C "$textPath" -bV >/dev/null
mv "$textPath" $out
'';
writeHaskellBin =
k:
let
k' = parseDrvName k;
name = k'.name;
version = if k'.version != "" then k'.version else "0";
in
{ build-depends ? ["base"] ++ depends
, depends ? []
, ghc-options ? ["-Wall" "-O3" "-threaded" "-rtsopts"]
, haskellPackages ? pkgs.haskellPackages
, license ? "WTFPL"
}:
main-text:
let
cabal-file = pkgs.writeText "${name}-${version}.cabal" ''
build-type: Simple
cabal-version: >= 1.2
name: ${name}
version: ${version}
executable ${name}
build-depends: ${concatStringsSep "," build-depends}
ghc-options: ${toString ghc-options}
main-is: ${main-file.name}
'';
main-file = pkgs.writeText "${name}-${version}.hs" main-text;
in
haskellPackages.mkDerivation rec {
inherit license version;
executableHaskellDepends = attrVals build-depends haskellPackages;
isExecutable = true;
isLibrary = false;
pname = name;
src = pkgs.runCommand "${name}-${version}-src" {} ''
install -D ${cabal-file} $out/${cabal-file.name}
install -D ${main-file} $out/${main-file.name}
'';
};
writeNixFromCabal = name: path: pkgs.runCommand name {} ''
${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out
'';
}
|
