forked from mirrors/gomod2nix
Add mkGoEnv function
This creates an `mkGoEnv` function which takes care of adding the correct Go package to your development environment and installs development dependencies from tools.go in a Nix derivation. The "normal" workflow around Go with tools.go just sticks development dependencies in $GOBIN which isn't ideal since you have no separation between projects.
This commit is contained in:
adisbladis
parent
d7830bd5b2
commit
a4bed25a86
6 changed files with 158 additions and 38 deletions
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@ -33,6 +33,96 @@ let
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impureEnvVars = lib.fetchers.proxyImpureEnvVars ++ [ "GOPROXY" ];
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};
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mkVendorEnv = { go, modulesStruct, localReplaceCommands ? [ ] }: runCommand "vendor-env"
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{
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nativeBuildInputs = [ go ];
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json = builtins.toJSON modulesStruct;
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sources = builtins.toJSON (
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lib.mapAttrs
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(goPackagePath: meta: fetchGoModule {
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goPackagePath = meta.replaced or goPackagePath;
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inherit (meta) version hash;
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inherit go;
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})
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modulesStruct.mod
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);
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passAsFile = [ "json" "sources" ];
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}
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(
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''
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mkdir vendor
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export GOCACHE=$TMPDIR/go-cache
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export GOPATH="$TMPDIR/go"
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go run ${./symlink.go}
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${lib.concatStringsSep "\n" localReplaceCommands}
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mv vendor $out
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''
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);
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mkGoEnv =
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{ pwd
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}@attrs:
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let
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goMod = parseGoMod (builtins.readFile "${builtins.toString pwd}/go.mod");
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modulesStruct = builtins.fromTOML (builtins.readFile "${builtins.toString pwd}/gomod2nix.toml");
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go = attrs.go or (
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let
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goVersion = goMod.go;
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goAttr = "go_" + (lib.replaceStrings [ "." ] [ "_" ] goVersion);
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in
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(
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if builtins.hasAttr goAttr pkgs then pkgs.${goAttr}
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else builtins.trace "go.mod specified Go version ${goVersion} but doesn't exist. Falling back to ${pkgs.go.version}." pkgs.go
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)
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);
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vendorEnv = mkVendorEnv {
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inherit go modulesStruct;
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};
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in
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stdenv.mkDerivation {
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name = "${builtins.baseNameOf goMod.module}-env";
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dontUnpack = true;
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dontConfigure = true;
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dontInstall = true;
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propagatedNativeBuildInputs = [ go ];
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GO_NO_VENDOR_CHECKS = "1";
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GO111MODULE = "on";
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GOFLAGS = "-mod=vendor";
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preferLocalBuild = true;
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buildPhase = ''
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mkdir $out
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export GOCACHE=$TMPDIR/go-cache
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export GOPATH="$out"
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export GOSUMDB=off
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export GOPROXY=off
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'' + lib.optionalString (lib.pathExists (pwd + "/tools./.go")) ''
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mkdir source
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cp ${pwd + "/go.mod"} source/go.mod
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cp ${pwd + "/go.sum"} source/go.sum
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cp ${pwd + "/tools.go"} source/tools.go
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cd source
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ln -s ${vendorEnv} vendor
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go run ${./install.go}
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'';
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};
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buildGoApplication =
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{ modules
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, go ? pkgs.go
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@ -64,39 +154,12 @@ let
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in
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if pwd != null then commands else [ ];
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vendorEnv = runCommand "vendor-env"
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{
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nativeBuildInputs = [ go ];
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json = builtins.toJSON modulesStruct;
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sources = builtins.toJSON (
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lib.mapAttrs
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(goPackagePath: meta: fetchGoModule {
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goPackagePath = meta.replaced or goPackagePath;
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inherit (meta) version hash;
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inherit go;
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})
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modulesStruct.mod
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);
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passAsFile = [ "json" "sources" ];
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}
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(
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''
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mkdir vendor
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export GOCACHE=$TMPDIR/go-cache
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export GOPATH="$TMPDIR/go"
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go run ${./symlink.go}
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${lib.concatStringsSep "\n" localReplaceCommands}
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mv vendor $out
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''
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);
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removeReferences = [ ] ++ lib.optional (!allowGoReference) go;
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vendorEnv = mkVendorEnv {
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inherit go modulesStruct localReplaceCommands;
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};
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package = stdenv.mkDerivation (attrs // {
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nativeBuildInputs = [ removeReferencesTo go ] ++ nativeBuildInputs;
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@ -230,4 +293,6 @@ let
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package;
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in
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buildGoApplication
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{
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inherit buildGoApplication mkGoEnv;
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}
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57
builder/install.go
Normal file
57
builder/install.go
Normal file
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@ -0,0 +1,57 @@
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package main
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import (
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"fmt"
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"go/parser"
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"go/token"
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"io"
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"os"
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"os/exec"
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"strconv"
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)
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const filename = "tools.go"
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func main() {
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fset := token.NewFileSet()
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var src []byte
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{
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f, err := os.Open(filename)
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if err != nil {
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panic(err)
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}
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src, err = io.ReadAll(f)
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if err != nil {
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panic(err)
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}
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}
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f, err := parser.ParseFile(fset, filename, src, parser.ImportsOnly)
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if err != nil {
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fmt.Println(err)
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return
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}
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for _, s := range f.Imports {
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path, err := strconv.Unquote(s.Path.Value)
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if err != nil {
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panic(err)
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}
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cmd := exec.Command("go", "install", path)
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fmt.Printf("Executing '%s'\n", cmd)
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err = cmd.Start()
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if err != nil {
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panic(err)
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}
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err = cmd.Wait()
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if err != nil {
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panic(err)
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}
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}
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}
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2
go.mod
2
go.mod
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@ -4,7 +4,7 @@ go 1.14
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require (
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github.com/BurntSushi/toml v1.1.0
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github.com/nix-community/go-nix v0.0.0-20220531154832-fb763dcb3ffc
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github.com/nix-community/go-nix v0.0.0-20220528121639-b940fb0a12d8
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github.com/sirupsen/logrus v1.8.1
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golang.org/x/mod v0.5.1
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
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2
go.sum
2
go.sum
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@ -15,8 +15,6 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
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github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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github.com/nix-community/go-nix v0.0.0-20220528121639-b940fb0a12d8 h1:IYr+3pldQtTwS55Xm2+3Ry81MpSKNVpMyYMNr7yQpts=
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github.com/nix-community/go-nix v0.0.0-20220528121639-b940fb0a12d8/go.mod h1:r5pCQAjHNSDWTsy6+UbacPN8EzMVJiCAXDWbRN2qfwU=
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github.com/nix-community/go-nix v0.0.0-20220531154832-fb763dcb3ffc h1:/uRl4vxjqF0N8m8ha+TouWZxsMRCA98Fft24WNIb0L8=
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github.com/nix-community/go-nix v0.0.0-20220531154832-fb763dcb3ffc/go.mod h1:r5pCQAjHNSDWTsy6+UbacPN8EzMVJiCAXDWbRN2qfwU=
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github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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@ -29,8 +29,8 @@ schema = 1
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version = "v0.1.0"
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hash = "sha256-QT65kTrNypS5GPWGvgnCpGLPlVbQAL4IYvuqAKhepb4="
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[mod."github.com/nix-community/go-nix"]
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version = "v0.0.0-20220531154832-fb763dcb3ffc"
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hash = "sha256-vCoRCe1DcyNXfz6gun9wGBu/o+j6WGcS8mbFmXZfyps="
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version = "v0.0.0-20220528121639-b940fb0a12d8"
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hash = "sha256-r6fq1mu0gRFqdI6msuAZp3ZoncAw5L16oBFPUA9vPYk="
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[mod."github.com/pkg/errors"]
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version = "v0.9.1"
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hash = "sha256-mNfQtcrQmu3sNg/7IwiieKWOgFQOVVe2yXgKBpe/wZw="
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@ -1,4 +1,4 @@
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final: prev: {
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buildGoApplication = final.callPackage ./builder { };
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inherit (final.callPackage ./builder { }) buildGoApplication mkGoEnv;
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gomod2nix = final.callPackage ./default.nix { };
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}
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