add Julia module support

Author: Jan Steinke

config.toml

@@ -67,6 +67,12 @@ bottles = [
   "docker",
 ]
 
+[julia]
+modules =[
+  "LanguageServer",
+  "Pluto"
+]
+
 [python]
 packages = [
   "autopep8",

internal/cmd/root.go

@@ -79,6 +79,7 @@ func initConfig() {
 	taps := viper.GetStringSlice("homebrew.taps")
 	vscodeExt := viper.GetStringSlice("vscode.extensions")
 	npmPackages := viper.GetStringSlice("npm.packages")
+	juliaModules := viper.GetStringSlice("julia.modules")
 	var goModules []dotfiles.GoModule
 	viper.UnmarshalKey("go.modules", &goModules)
 	var symlinks []dotfiles.Link
@@ -99,5 +100,6 @@ func initConfig() {
 		dotfiles.AppStore{Apps: apps, Profile: appStoreProfile, Commander: execCommander},
 		dotfiles.SystemPreferences{Preferences: preferences, Commander: execCommander},
 		dotfiles.Symlink{Links: symlinks, Commander: execCommander},
+		dotfiles.Julia{Modules: juliaModules, Commander: execCommander},
 	}
 }

internal/julia.go

@@ -0,0 +1,70 @@
+package dotfiles
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/sirupsen/logrus"
+)
+
+var juliaExe = "julia"
+
+// NPM holds the information for all needed NPM packages.
+type Julia struct {
+	Modules   []string
+	Commander Commander
+}
+
+// GetMissingPackages returns a list of packages which are configured but not installed.
+func (b Julia) GetMissingPackages() ([]string, error) {
+	missingBottles := []string{}
+	stdout, err := b.Commander(juliaExe, "-e", "import Pkg;Pkg.status()")
+	if err != nil {
+		return nil, err
+	}
+	logrus.WithField("output", string(stdout)).Debug("julia stdout")
+	installedFormulae := strings.Split(strings.Trim(string(stdout), "\n"), "\n")[1:]
+	logrus.WithField("output", installedFormulae).Debug("julia installed formulae")
+	installedMap := map[string]bool{}
+	for _, p := range installedFormulae {
+		logrus.WithField("output", p).Error("julia installed formulae")
+		words := strings.Fields(p)
+		installedMap[words[1]] = true
+	}
+
+	for _, bottle := range b.Modules {
+		if ok := installedMap[bottle]; !ok {
+			missingBottles = append(missingBottles, bottle)
+		}
+	}
+
+	return missingBottles, nil
+}
+
+// InstallPackages takes a list of packages for installation.
+func (b Julia) InstallPackages(packages []string) error {
+	if len(packages) == 0 {
+		logrus.Info("no julia modules to install")
+		return nil
+	}
+	logrus.Info("Installing julia modules:", packages)
+
+	pkgCommand := fmt.Sprintf("import Pkg;Pkg.add.([\"%s\"])", strings.Join(packages[:], "\",\""))
+
+	_, err := b.Commander(juliaExe, "-e", pkgCommand)
+	if err != nil {
+		logrus.Error("Failed installing julia modules:", err)
+	}
+	return nil
+}
+
+// UpdatePackages is currently not implemented.
+func (b Julia) UpdatePackages() error {
+	logrus.Info("Upgrading julia modules")
+	_, err := b.Commander(juliaExe, "-e", "import Pkg;Pkg.update()")
+	if err != nil {
+		logrus.Error("Failed update npm packages:", err)
+		return err
+	}
+	return nil
+}

internal/julia_test.go

@@ -0,0 +1,62 @@
+package dotfiles
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetMissingJuliaModules(t *testing.T) {
+	commander := mockCommander{}
+	defer commander.AssertExpectations(t)
+	commander.ExpectOutput(
+		"julia",
+		[]string{"-e", "import Pkg;Pkg.status()"},
+		[]byte("Status `~/.julia/environments/v1.6/Project.toml`\n [2b0e0bc5] bar v4.1.0\n [c3e4b0f8] Pluto v0.15.1Pkg\n"),
+		nil,
+	)
+	b := Julia{
+		Modules:   []string{"bar", "foo"},
+		Commander: commander.Output,
+	}
+	missingPackages, err := b.GetMissingPackages()
+	assert.NoError(t, err)
+	assert.Equal(t, []string{"foo"}, missingPackages)
+}
+
+func TestInstallingJuliaModules(t *testing.T) {
+	commander := mockCommander{}
+	defer commander.AssertExpectations(t)
+	commander.ExpectOutput(
+		"julia",
+		[]string{"-e", "import Pkg;Pkg.add.([\"bar\",\"foo\"])"},
+		nil,
+		nil,
+	)
+	b := Julia{
+		Commander: commander.Output,
+	}
+	err := b.InstallPackages([]string{"bar", "foo"})
+	assert.NoError(t, err)
+}
+
+func TestTryingToInstallJuliaModulesWithEmptyListDoesNotCallCode(t *testing.T) {
+	commander := mockCommander{}
+	defer commander.AssertExpectations(t)
+	b := Julia{
+		Commander: commander.Output,
+	}
+	err := b.InstallPackages([]string{})
+	assert.NoError(t, err)
+}
+
+func TestUpdatingJulaModules(t *testing.T) {
+	commander := mockCommander{}
+	defer commander.AssertExpectations(t)
+	commander.ExpectOutput("julia", []string{"-e", "import Pkg;Pkg.update()"}, nil, nil)
+	b := Julia{
+		Commander: commander.Output,
+	}
+	err := b.UpdatePackages()
+	assert.NoError(t, err)
+}