mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-17 15:22:59 +01:00
c5c5465fe4
We shouldn’t force the user to have a C compiler in scope, just because the derivation is forced to build locally. That can’t be counted as “lightweight” anymore. Co-Authored-By: Silvan Mosberger<contact@infinisil.com>
438 lines
12 KiB
Nix
438 lines
12 KiB
Nix
{ lib, stdenv, stdenvNoCC, lndir, runtimeShell }:
|
||
|
||
let
|
||
|
||
runCommand' = runLocal: stdenv: name: env: buildCommand:
|
||
stdenv.mkDerivation ({
|
||
inherit name buildCommand;
|
||
passAsFile = [ "buildCommand" ];
|
||
}
|
||
// (lib.optionalAttrs runLocal {
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
})
|
||
// env);
|
||
|
||
in
|
||
|
||
rec {
|
||
|
||
/* Run the shell command `buildCommand' to produce a store path named
|
||
* `name'. The attributes in `env' are added to the environment
|
||
* prior to running the command. By default `runCommand' runs using
|
||
* stdenv with no compiler environment. `runCommandCC`
|
||
*
|
||
* Examples:
|
||
* runCommand "name" {envVariable = true;} ''echo hello > $out''
|
||
* runCommandNoCC "name" {envVariable = true;} ''echo hello > $out'' # equivalent to prior
|
||
* runCommandCC "name" {} ''gcc -o myfile myfile.c; cp myfile $out'';
|
||
*
|
||
* The `*Local` variants force a derivation to be built locally,
|
||
* it is not substituted.
|
||
*
|
||
* This is intended for very cheap commands (<1s execution time).
|
||
* It saves on the network roundrip and can speed up a build.
|
||
*
|
||
* It is the same as adding the special fields
|
||
* `preferLocalBuild = true;`
|
||
* `allowSubstitutes = false;`
|
||
* to a derivation’s attributes.
|
||
*/
|
||
runCommand = runCommandNoCC;
|
||
runCommandLocal = runCommandNoCCLocal;
|
||
|
||
runCommandNoCC = runCommand' false stdenvNoCC;
|
||
runCommandNoCCLocal = runCommand' true stdenvNoCC;
|
||
|
||
runCommandCC = runCommand' false stdenv;
|
||
# `runCommandCCLocal` left out on purpose.
|
||
# We shouldn’t force the user to have a cc in scope.
|
||
|
||
/* Writes a text file to the nix store.
|
||
* The contents of text is added to the file in the store.
|
||
*
|
||
* Examples:
|
||
* # Writes my-file to /nix/store/<store path>
|
||
* writeTextFile {
|
||
* name = "my-file";
|
||
* text = ''
|
||
* Contents of File
|
||
* '';
|
||
* }
|
||
* # See also the `writeText` helper function below.
|
||
*
|
||
* # Writes executable my-file to /nix/store/<store path>/bin/my-file
|
||
* writeTextFile {
|
||
* name = "my-file";
|
||
* text = ''
|
||
* Contents of File
|
||
* '';
|
||
* executable = true;
|
||
* destination = "/bin/my-file";
|
||
* }
|
||
*/
|
||
writeTextFile =
|
||
{ name # the name of the derivation
|
||
, text
|
||
, executable ? false # run chmod +x ?
|
||
, destination ? "" # relative path appended to $out eg "/bin/foo"
|
||
, checkPhase ? "" # syntax checks, e.g. for scripts
|
||
}:
|
||
runCommand name
|
||
{ inherit text executable;
|
||
passAsFile = [ "text" ];
|
||
# Pointless to do this on a remote machine.
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
}
|
||
''
|
||
n=$out${destination}
|
||
mkdir -p "$(dirname "$n")"
|
||
|
||
if [ -e "$textPath" ]; then
|
||
mv "$textPath" "$n"
|
||
else
|
||
echo -n "$text" > "$n"
|
||
fi
|
||
|
||
${checkPhase}
|
||
|
||
(test -n "$executable" && chmod +x "$n") || true
|
||
'';
|
||
|
||
/*
|
||
* Writes a text file to nix store with no optional parameters available.
|
||
*
|
||
* Example:
|
||
* # Writes contents of file to /nix/store/<store path>
|
||
* writeText "my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeText = name: text: writeTextFile {inherit name text;};
|
||
|
||
/*
|
||
* Writes a text file to nix store in a specific directory with no
|
||
* optional parameters available.
|
||
*
|
||
* Example:
|
||
* # Writes contents of file to /nix/store/<store path>/share/my-file
|
||
* writeTextDir "share/my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeTextDir = path: text: writeTextFile {
|
||
inherit text;
|
||
name = builtins.baseNameOf path;
|
||
destination = "/${path}";
|
||
};
|
||
|
||
/*
|
||
* Writes a text file to /nix/store/<store path> and marks the file as
|
||
* executable.
|
||
*
|
||
* If passed as a build input, will be used as a setup hook. This makes setup
|
||
* hooks more efficient to create: you don't need a derivation that copies
|
||
* them to $out/nix-support/setup-hook, instead you can use the file as is.
|
||
*
|
||
* Example:
|
||
* # Writes my-file to /nix/store/<store path> and makes executable
|
||
* writeScript "my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeScript = name: text: writeTextFile {inherit name text; executable = true;};
|
||
|
||
/*
|
||
* Writes a text file to /nix/store/<store path>/bin/<name> and
|
||
* marks the file as executable.
|
||
*
|
||
* Example:
|
||
* # Writes my-file to /nix/store/<store path>/bin/my-file and makes executable.
|
||
* writeScriptBin "my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeScriptBin = name: text: writeTextFile {inherit name text; executable = true; destination = "/bin/${name}";};
|
||
|
||
/*
|
||
* Similar to writeScript. Writes a Shell script and checks its syntax.
|
||
* Automatically includes interpreter above the contents passed.
|
||
*
|
||
* Example:
|
||
* # Writes my-file to /nix/store/<store path> and makes executable.
|
||
* writeShellScript "my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeShellScript = name: text:
|
||
writeTextFile {
|
||
inherit name;
|
||
executable = true;
|
||
text = ''
|
||
#!${runtimeShell}
|
||
${text}
|
||
'';
|
||
checkPhase = ''
|
||
${stdenv.shell} -n $out
|
||
'';
|
||
};
|
||
|
||
/*
|
||
* Similar to writeShellScript and writeScriptBin.
|
||
* Writes an executable Shell script to /nix/store/<store path>/bin/<name> and checks its syntax.
|
||
* Automatically includes interpreter above the contents passed.
|
||
*
|
||
* Example:
|
||
* # Writes my-file to /nix/store/<store path>/bin/my-file and makes executable.
|
||
* writeShellScriptBin "my-file"
|
||
* ''
|
||
* Contents of File
|
||
* '';
|
||
*
|
||
*/
|
||
writeShellScriptBin = name : text :
|
||
writeTextFile {
|
||
inherit name;
|
||
executable = true;
|
||
destination = "/bin/${name}";
|
||
text = ''
|
||
#!${runtimeShell}
|
||
${text}
|
||
'';
|
||
checkPhase = ''
|
||
${stdenv.shell} -n $out/bin/${name}
|
||
'';
|
||
};
|
||
|
||
# Create a C binary
|
||
writeCBin = name: code:
|
||
runCommandCC name
|
||
{
|
||
inherit name code;
|
||
executable = true;
|
||
passAsFile = ["code"];
|
||
# Pointless to do this on a remote machine.
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
}
|
||
''
|
||
n=$out/bin/$name
|
||
mkdir -p "$(dirname "$n")"
|
||
mv "$codePath" code.c
|
||
$CC -x c code.c -o "$n"
|
||
'';
|
||
|
||
/*
|
||
* Create a forest of symlinks to the files in `paths'.
|
||
*
|
||
* Examples:
|
||
* # adds symlinks of hello to current build.
|
||
* { symlinkJoin, hello }:
|
||
* symlinkJoin { name = "myhello"; paths = [ hello ]; }
|
||
*
|
||
* # adds symlinks of hello to current build and prints "links added"
|
||
* { symlinkJoin, hello }:
|
||
* symlinkJoin { name = "myhello"; paths = [ hello ]; postBuild = "echo links added"; }
|
||
*/
|
||
symlinkJoin =
|
||
args_@{ name
|
||
, paths
|
||
, preferLocalBuild ? true
|
||
, allowSubstitutes ? false
|
||
, postBuild ? ""
|
||
, ...
|
||
}:
|
||
let
|
||
args = removeAttrs args_ [ "name" "postBuild" ]
|
||
// { inherit preferLocalBuild allowSubstitutes; }; # pass the defaults
|
||
in runCommand name args
|
||
''
|
||
mkdir -p $out
|
||
for i in $paths; do
|
||
${lndir}/bin/lndir -silent $i $out
|
||
done
|
||
${postBuild}
|
||
'';
|
||
|
||
|
||
/*
|
||
* Make a package that just contains a setup hook with the given contents.
|
||
* This setup hook will be invoked by any package that includes this package
|
||
* as a buildInput. Optionally takes a list of substitutions that should be
|
||
* applied to the resulting script.
|
||
*
|
||
* Examples:
|
||
* # setup hook that depends on the hello package and runs ./myscript.sh
|
||
* myhellohook = makeSetupHook { deps = [ hello ]; } ./myscript.sh;
|
||
*
|
||
* # wrotes a setup hook where @bash@ myscript.sh is substituted for the
|
||
* # bash interpreter.
|
||
* myhellohookSub = makeSetupHook {
|
||
* deps = [ hello ];
|
||
* substitutions = { bash = "${pkgs.bash}/bin/bash"; };
|
||
* } ./myscript.sh;
|
||
*/
|
||
makeSetupHook = { name ? "hook", deps ? [], substitutions ? {} }: script:
|
||
runCommand name substitutions
|
||
(''
|
||
mkdir -p $out/nix-support
|
||
cp ${script} $out/nix-support/setup-hook
|
||
'' + lib.optionalString (deps != []) ''
|
||
printWords ${toString deps} > $out/nix-support/propagated-build-inputs
|
||
'' + lib.optionalString (substitutions != {}) ''
|
||
substituteAll ${script} $out/nix-support/setup-hook
|
||
'');
|
||
|
||
|
||
# Write the references (i.e. the runtime dependencies in the Nix store) of `path' to a file.
|
||
|
||
writeReferencesToFile = path: runCommand "runtime-deps"
|
||
{
|
||
exportReferencesGraph = ["graph" path];
|
||
}
|
||
''
|
||
touch $out
|
||
while read path; do
|
||
echo $path >> $out
|
||
read dummy
|
||
read nrRefs
|
||
for ((i = 0; i < nrRefs; i++)); do read ref; done
|
||
done < graph
|
||
'';
|
||
|
||
|
||
/*
|
||
* Quickly create a set of symlinks to derivations.
|
||
* entries is a list of attribute sets like
|
||
* { name = "name" ; path = "/nix/store/..."; }
|
||
*
|
||
* Example:
|
||
*
|
||
* # Symlinks hello path in store to current $out/hello
|
||
* linkFarm "hello" [ { name = "hello"; path = pkgs.hello; } ];
|
||
*
|
||
*/
|
||
linkFarm = name: entries: runCommand name { preferLocalBuild = true; allowSubstitutes = false; }
|
||
''mkdir -p $out
|
||
cd $out
|
||
${lib.concatMapStrings (x: ''
|
||
mkdir -p "$(dirname ${lib.escapeShellArg x.name})"
|
||
ln -s ${lib.escapeShellArg x.path} ${lib.escapeShellArg x.name}
|
||
'') entries}
|
||
'';
|
||
|
||
|
||
/* Print an error message if the file with the specified name and
|
||
* hash doesn't exist in the Nix store. This function should only
|
||
* be used by non-redistributable software with an unfree license
|
||
* that we need to require the user to download manually. It produces
|
||
* packages that cannot be built automatically.
|
||
*
|
||
* Examples:
|
||
*
|
||
* requireFile {
|
||
* name = "my-file";
|
||
* url = "http://example.com/download/";
|
||
* sha256 = "ffffffffffffffffffffffffffffffffffffffffffffffffffff";
|
||
* }
|
||
*/
|
||
requireFile = { name ? null
|
||
, sha256 ? null
|
||
, sha1 ? null
|
||
, url ? null
|
||
, message ? null
|
||
, hashMode ? "flat"
|
||
} :
|
||
assert (message != null) || (url != null);
|
||
assert (sha256 != null) || (sha1 != null);
|
||
assert (name != null) || (url != null);
|
||
let msg =
|
||
if message != null then message
|
||
else ''
|
||
Unfortunately, we cannot download file ${name_} automatically.
|
||
Please go to ${url} to download it yourself, and add it to the Nix store
|
||
using either
|
||
nix-store --add-fixed ${hashAlgo} ${name_}
|
||
or
|
||
nix-prefetch-url --type ${hashAlgo} file:///path/to/${name_}
|
||
'';
|
||
hashAlgo = if sha256 != null then "sha256" else "sha1";
|
||
hash = if sha256 != null then sha256 else sha1;
|
||
name_ = if name == null then baseNameOf (toString url) else name;
|
||
in
|
||
stdenvNoCC.mkDerivation {
|
||
name = name_;
|
||
outputHashMode = hashMode;
|
||
outputHashAlgo = hashAlgo;
|
||
outputHash = hash;
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
builder = writeScript "restrict-message" ''
|
||
source ${stdenvNoCC}/setup
|
||
cat <<_EOF_
|
||
|
||
***
|
||
${msg}
|
||
***
|
||
|
||
_EOF_
|
||
exit 1
|
||
'';
|
||
};
|
||
|
||
|
||
# Copy a path to the Nix store.
|
||
# Nix automatically copies files to the store before stringifying paths.
|
||
# If you need the store path of a file, ${copyPathToStore <path>} can be
|
||
# shortened to ${<path>}.
|
||
copyPathToStore = builtins.filterSource (p: t: true);
|
||
|
||
|
||
# Copy a list of paths to the Nix store.
|
||
copyPathsToStore = builtins.map copyPathToStore;
|
||
|
||
/* Applies a list of patches to a source directory.
|
||
*
|
||
* Examples:
|
||
*
|
||
* # Patching nixpkgs:
|
||
* applyPatches {
|
||
* src = pkgs.path;
|
||
* patches = [
|
||
* (pkgs.fetchpatch {
|
||
* url = "https://github.com/NixOS/nixpkgs/commit/1f770d20550a413e508e081ddc08464e9d08ba3d.patch";
|
||
* sha256 = "1nlzx171y3r3jbk0qhvnl711kmdk57jlq4na8f8bs8wz2pbffymr";
|
||
* })
|
||
* ];
|
||
* }
|
||
*/
|
||
applyPatches =
|
||
{ src
|
||
, name ? (if builtins.typeOf src == "path"
|
||
then builtins.baseNameOf src
|
||
else
|
||
if builtins.isAttrs src && builtins.hasAttr "name" src
|
||
then src.name
|
||
else throw "applyPatches: please supply a `name` argument because a default name can only be computed when the `src` is a path or is an attribute set with a `name` attribute."
|
||
) + "-patched"
|
||
, patches ? []
|
||
, postPatch ? ""
|
||
}: stdenvNoCC.mkDerivation {
|
||
inherit name src patches postPatch;
|
||
preferLocalBuild = true;
|
||
allowSubstitutes = false;
|
||
phases = "unpackPhase patchPhase installPhase";
|
||
installPhase = "cp -R ./ $out";
|
||
};
|
||
}
|