1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
{ config, 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}"; });
writeBash = name: text: pkgs.writeScript name ''
#! ${pkgs.bash}/bin/bash
${text}
'';
writeBashBin = name: text: pkgs.writeTextFile {
executable = true;
destination = "/bin/${name}";
name = name;
text = ''
#! ${pkgs.bash}/bin/bash
${text}
'';
};
writeC = name: { destination ? "" }: src: pkgs.runCommand name {} ''
PATH=${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" $out
'';
writeHaskell =
k:
let
k' = parseDrvName k;
name = k'.name;
version = if k'.version != "" then k'.version else "0";
in
{ base-depends ? ["base"]
, executables ? {}
, ghc-options ? ["-Wall" "-O3" "-threaded" "-rtsopts"]
, haskellPackages ? pkgs.haskellPackages
, library ? null
, license ? "WTFPL"
}:
let
isExecutable = executables != {};
isLibrary = library != null;
cabal-file = pkgs.writeText "${name}-${version}.cabal" ''
build-type: Simple
cabal-version: >= 1.2
name: ${name}
version: ${version}
${concatStringsSep "\n" (mapAttrsToList exe-section executables)}
${optionalString isLibrary (lib-section library)}
'';
exe-install =
exe-name:
{ file ? pkgs.writeText "${name}-${exe-name}.hs" text
, relpath ? "${exe-name}.hs"
, text
, ... }:
if types.filename.check exe-name
then "install -D ${file} $out/${relpath}"
else throw "argument ‘exe-name’ is not a ${types.filename.name}";
exe-section =
exe-name:
{ build-depends ? base-depends ++ extra-depends
, extra-depends ? []
, file ? pkgs.writeText "${name}-${exe-name}.hs" text
, relpath ? "${exe-name}.hs"
, text
, ... }: ''
executable ${exe-name}
build-depends: ${concatStringsSep "," build-depends}
ghc-options: ${toString ghc-options}
main-is: ${relpath}
'';
get-depends =
{ build-depends ? base-depends ++ extra-depends
, extra-depends ? []
, ...
}:
build-depends;
lib-install =
{ exposed-modules
, ... }:
concatStringsSep "\n" (mapAttrsToList mod-install exposed-modules);
lib-section =
{ build-depends ? base-depends ++ extra-depends
, extra-depends ? []
, exposed-modules
, ... }: ''
library
build-depends: ${concatStringsSep "," build-depends}
ghc-options: ${toString ghc-options}
exposed-modules: ${concatStringsSep "," (attrNames exposed-modules)}
'';
mod-install =
mod-name:
{ file ? pkgs.writeText "${name}-${mod-name}.hs" text
, relpath ? "${replaceStrings ["."] ["/"] mod-name}.hs"
, text
, ... }:
if types.haskell.modid.check mod-name
then "install -D ${file} $out/${relpath}"
else throw "argument ‘mod-name’ is not a ${types.haskell.modid.name}";
in
haskellPackages.mkDerivation {
inherit isExecutable isLibrary license version;
executableHaskellDepends =
attrVals
(concatMap get-depends (attrValues executables))
haskellPackages;
libraryHaskellDepends =
attrVals
(optionals isLibrary (get-depends library))
haskellPackages;
pname = name;
src = pkgs.runCommand "${name}-${version}-src" {} ''
install -D ${cabal-file} $out/${cabal-file.name}
${optionalString isLibrary (lib-install library)}
${concatStringsSep "\n" (mapAttrsToList exe-install executables)}
'';
};
writeNixFromCabal =
trace (toString [
"The function `writeNixFromCabal` has been deprecated in favour of"
"`writeHaskell`."
])
(name: path: pkgs.runCommand name {} ''
${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out
'');
}
|
