diff --git a/go.mod b/go.mod
index b9f600d..0592d7d 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/gnolang/gno v0.0.0-20240118150545-7aa81d138701
 	github.com/google/go-github v17.0.0+incompatible
 	github.com/orcaman/concurrent-map/v2 v2.0.1
+	github.com/samber/slog-multi v1.1.0
 	github.com/spf13/cobra v1.5.0
 	go.lsp.dev/jsonrpc2 v0.10.0
 	go.lsp.dev/pkg v0.0.0-20210717090340-384b27a52fb2
@@ -47,6 +48,7 @@ require (
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rs/cors v1.10.1 // indirect
+	github.com/samber/lo v1.38.1 // indirect
 	github.com/segmentio/asm v1.1.3 // indirect
 	github.com/segmentio/encoding v0.3.4 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
@@ -56,6 +58,7 @@ require (
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/zap v1.24.0 // indirect
 	golang.org/x/crypto v0.15.0 // indirect
+	golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 // indirect
 	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/sys v0.14.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
diff --git a/go.sum b/go.sum
index 4ba0727..177943b 100644
--- a/go.sum
+++ b/go.sum
@@ -180,6 +180,10 @@ github.com/rs/cors v1.10.1 h1:L0uuZVXIKlI1SShY2nhFfo44TYvDPQ1w4oFkUJNfhyo=
 github.com/rs/cors v1.10.1/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/samber/lo v1.38.1 h1:j2XEAqXKb09Am4ebOg31SpvzUTTs6EN3VfgeLUhPdXM=
+github.com/samber/lo v1.38.1/go.mod h1:+m/ZKRl6ClXCE2Lgf3MsQlWfh4bn1bz6CXEOxnEXnEA=
+github.com/samber/slog-multi v1.1.0 h1:m5wfpXE8Qu2gCiR/JnhFGsLcWDOmTxnso32EMffVAY0=
+github.com/samber/slog-multi v1.1.0/go.mod h1:uLAvHpGqbYgX4FSL0p1ZwoLuveIAJvBECtE07XmYvFo=
 github.com/segmentio/asm v1.1.3 h1:WM03sfUOENvvKexOLp+pCqgb/WDjsi7EK8gIsICtzhc=
 github.com/segmentio/asm v1.1.3/go.mod h1:Ld3L4ZXGNcSLRg4JBsZ3//1+f/TjYl0Mzen/DQy1EJg=
 github.com/segmentio/encoding v0.3.4 h1:WM4IBnxH8B9TakiM2QD5LyNl9JSndh88QbHqVC+Pauc=
@@ -239,6 +243,8 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.15.0 h1:frVn1TEaCEaZcn3Tmd7Y2b5KKPaZ+I32Q2OA3kYp5TA=
 golang.org/x/crypto v0.15.0/go.mod h1:4ChreQoLWfG3xLDer1WdlH5NdlQ3+mwnQq1YTKY+72g=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
+golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17 h1:3MTrJm4PyNL9NBqvYDSj3DHl46qQakyfqfWo4jgfaEM=
+golang.org/x/exp v0.0.0-20220303212507-bbda1eaf7a17/go.mod h1:lgLbSvA5ygNOMpwM/9anMpWVlVJ7Z+cHWq/eFuinpGE=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
diff --git a/internal/lsp/build.go b/internal/lsp/build.go
index 8062401..4969bbf 100644
--- a/internal/lsp/build.go
+++ b/internal/lsp/build.go
@@ -30,6 +30,7 @@ func (s *server) TranspileAndBuild(file *GnoFile) ([]ErrorInfo, error) {
 		return nil, err
 	}
 
+	slog.Info("transpiling", slog.String("dir", tmpDir))
 	preOut, _ := tools.Transpile(tmpDir)
 	slog.Info(string(preOut))
 	if len(preOut) > 0 {
diff --git a/internal/lsp/check.go b/internal/lsp/check.go
index 505b227..ef05f8b 100644
--- a/internal/lsp/check.go
+++ b/internal/lsp/check.go
@@ -7,10 +7,12 @@ import (
 	"go/parser"
 	"go/token"
 	"go/types"
+	"io/fs"
 	"log/slog"
 	"math"
 	"os"
 	"path/filepath"
+	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -38,6 +40,7 @@ type PackageGetter interface {
 // PackageInfo if found.
 // Note: it doesn't work for relative path
 func GetPackageInfo(path string) (*PackageInfo, error) {
+	//slog.Info("getting package info for", slog.String("path", path))
 	// if not absolute, assume its import path
 	if !filepath.IsAbs(path) {
 		if env.GlobalEnv.GNOROOT == "" {
@@ -45,7 +48,47 @@ func GetPackageInfo(path string) (*PackageInfo, error) {
 			// `examples` and `stdlibs`
 			return nil, errors.New("GNOROOT not set")
 		}
-		if strings.HasPrefix(path, "gno.land/") { // look in `examples`
+		if strings.HasPrefix(path, "gno.land/") { // look in gno `examples` and extra dirs
+			// find in extra dirs
+			srcPathsStr, ok := os.LookupEnv("GNOSRCPATHS")
+			//slog.Info("extra source paths", slog.String("env", srcPathsStr))
+			if ok {
+				srcPaths := strings.Split(srcPathsStr, ",")
+				for _, srcPath := range srcPaths {
+					modFiles := []string{}
+					if err := filepath.Walk(srcPath, func(path string, info fs.FileInfo, err error) error {
+						if !strings.HasSuffix(path, "/gno.mod") {
+							return nil
+						}
+						//slog.Info("found mod file", slog.String("path", path))
+						modFiles = append(modFiles, path)
+						return nil
+					}); err != nil {
+						return nil, err
+					}
+
+					for _, modFile := range modFiles {
+						modData, err := os.ReadFile(modFile)
+						if err != nil {
+							continue
+						}
+						re := regexp.MustCompile(`^module (.+)`)
+						res := re.FindSubmatch(modData)
+						if len(res) != 2 {
+							continue
+						}
+						pkgDir := strings.TrimSuffix(modFile, "/gno.mod")
+						pkgPath := string(res[1])
+						//slog.Info("found package", slog.String("path", pkgPath), slog.String("dir", pkgDir))
+						if pkgPath != path {
+							continue
+						}
+						//slog.Info("found correct package")
+						return getPackageInfo(pkgDir)
+					}
+				}
+			}
+
 			path = filepath.Join(env.GlobalEnv.GNOROOT, "examples", path)
 		} else { // look into `stdlibs`
 			path = filepath.Join(env.GlobalEnv.GNOROOT, "gnovm", "stdlibs", path)
diff --git a/internal/lsp/completion.go b/internal/lsp/completion.go
index c1f0ff0..ed582f7 100644
--- a/internal/lsp/completion.go
+++ b/internal/lsp/completion.go
@@ -41,6 +41,7 @@ func (cs *CompletionStore) lookupPkg(pkg string) *Package {
 }
 
 func (cs *CompletionStore) lookupSymbol(pkg, symbol string) *Symbol {
+	pnames := []string{}
 	for _, p := range cs.pkgs {
 		if p.Name == pkg {
 			for _, s := range p.Symbols {
@@ -49,7 +50,9 @@ func (cs *CompletionStore) lookupSymbol(pkg, symbol string) *Symbol {
 				}
 			}
 		}
+		pnames = append(pnames, p.Name)
 	}
+	slog.Info("pkg not found", "pkg", pkg, "symbol", symbol, "pkgs", pnames)
 	return nil
 }
 
diff --git a/internal/lsp/definition.go b/internal/lsp/definition.go
index da64c23..2378c30 100644
--- a/internal/lsp/definition.go
+++ b/internal/lsp/definition.go
@@ -86,14 +86,17 @@ func (s *server) Definition(ctx context.Context, reply jsonrpc2.Replier, req jso
 			int(line),
 			offset,
 		)
+		slog.Info("node", "str", n.String(), "tv", tv)
 		if tv == nil || tv.Type == nil {
 			switch t := paths[1].(type) {
 			case *ast.FuncDecl:
+				slog.Info("func decl", "t", t)
 				if t.Recv != nil {
 					return definitionMethodDecl(ctx, reply, params, pkg, n, t)
 				}
 				return definitionFuncDecl(ctx, reply, params, pkg, n)
 			case *ast.SelectorExpr:
+				slog.Info("selector expr", "t", t)
 				return definitionSelectorExpr(ctx, s, reply, params, pgf, pkg, paths, n, t, int(line))
 			default:
 				return reply(ctx, nil, nil)
@@ -170,6 +173,7 @@ func definitionSelectorExpr(ctx context.Context, s *server, reply jsonrpc2.Repli
 			} else if last == parentStr { // on package symbol
 				symbol := s.completionStore.lookupSymbol(parentStr, i.Name)
 				if symbol == nil {
+					slog.Info("symbol not found", "parent", parentStr, "symbol", i.Name)
 					break
 				}
 
diff --git a/internal/lsp/hover.go b/internal/lsp/hover.go
index e9726a1..d133f17 100644
--- a/internal/lsp/hover.go
+++ b/internal/lsp/hover.go
@@ -64,17 +64,21 @@ func (s *server) Hover(ctx context.Context, reply jsonrpc2.Replier, req jsonrpc2
 	// Get path enclosing
 	paths := pathEnclosingObjNode(pgf.File, token.Pos(offset))
 	if len(paths) < 2 {
+		slog.Info("path not found", "pos", token.Pos(offset))
 		return reply(ctx, nil, nil)
 	}
 
 	switch n := paths[0].(type) {
 	case *ast.Ident:
+		slog.Info("ident type")
+
 		_, tv := getTypeAndValue(
 			*pkg.TypeCheckResult.fset,
 			info, n.Name,
 			int(line),
 			offset,
 		)
+		slog.Info("got tv", "tv", tv)
 		if tv == nil || tv.Type == nil {
 			switch t := paths[1].(type) {
 			case *ast.FuncDecl:
@@ -153,6 +157,7 @@ func (s *server) Hover(ctx context.Context, reply jsonrpc2.Replier, req jsonrpc2
 			),
 		}, nil)
 	default:
+		slog.Info("unknown type")
 		return reply(ctx, nil, nil)
 	}
 }
diff --git a/internal/lsp/server.go b/internal/lsp/server.go
index f53453d..cd5064f 100644
--- a/internal/lsp/server.go
+++ b/internal/lsp/server.go
@@ -31,6 +31,7 @@ func BuildServerHandler(conn jsonrpc2.Conn, e *env.Env) jsonrpc2.Handler {
 	if e.GNOROOT != "" {
 		dirs = append(dirs, filepath.Join(e.GNOROOT, "examples"))
 		dirs = append(dirs, filepath.Join(e.GNOROOT, "gnovm/stdlibs"))
+		dirs = append(dirs, os.Getenv("GNOSRCPATHS"))
 	}
 	server := &server{
 		conn: conn,
diff --git a/internal/tools/build.go b/internal/tools/build.go
index d48ff6f..d93f6b6 100644
--- a/internal/tools/build.go
+++ b/internal/tools/build.go
@@ -1,12 +1,21 @@
 package tools
 
 import (
+	"log/slog"
+	"os"
 	"os/exec"
 	"path/filepath"
+	"strings"
 )
 
 // Build a Gno package: gno transpile -gobuild <dir>.
 // TODO: Remove this in the favour of directly using tools/transpile.go
 func Build(rootDir string) ([]byte, error) {
-	return exec.Command("gno", "transpile", "-skip-imports", "-gobuild", filepath.Join(rootDir)).CombinedOutput()
+	args := []string{"transpile", "-skip-imports", "-gobuild", filepath.Join(rootDir)}
+	srcPathsStr := os.Getenv("GNOSRCPATHS")
+	if srcPathsStr != "" {
+		args = append(args, "-extra-dirs", srcPathsStr)
+	}
+	slog.Info("will run", slog.String("cmd", strings.Join(append([]string{"gno"}, args...), " ")))
+	return exec.Command("gno", args...).CombinedOutput()
 }
diff --git a/internal/tools/transpile.go b/internal/tools/transpile.go
index 4ff66de..e79aef9 100644
--- a/internal/tools/transpile.go
+++ b/internal/tools/transpile.go
@@ -1,11 +1,17 @@
 package tools
 
 import (
+	"os"
 	"os/exec"
 	"path/filepath"
 )
 
 // Transpile a Gno package: gno transpile <dir>.
 func Transpile(rootDir string) ([]byte, error) {
-	return exec.Command("gno", "transpile", "-skip-imports", filepath.Join(rootDir)).CombinedOutput()
+	args := []string{"transpile", "-skip-imports", filepath.Join(rootDir)}
+	srcPathsStr := os.Getenv("GNOSRCPATHS")
+	if srcPathsStr != "" {
+		args = append(args, "-extra-dirs", srcPathsStr)
+	}
+	return exec.Command("gno", args...).CombinedOutput()
 }
diff --git a/main.go b/main.go
index 1a5e871..b992f82 100644
--- a/main.go
+++ b/main.go
@@ -1,7 +1,31 @@
 package main
 
-import "github.com/gnolang/gnopls/cmd"
+import (
+	"log/slog"
+	"os"
+	"path/filepath"
+
+	"github.com/gnolang/gnopls/cmd"
+	slogmulti "github.com/samber/slog-multi"
+)
 
 func main() {
+	userHomeDir, err := os.UserHomeDir()
+	if err != nil {
+		panic(err)
+	}
+	logFilePath := filepath.Join(userHomeDir, "gnopls.log")
+	logFile, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0755)
+	if err != nil {
+		panic(err)
+	}
+	defer logFile.Close()
+	logger := slog.New(
+		slogmulti.Fanout(
+			slog.NewTextHandler(logFile, &slog.HandlerOptions{}),   // pass to first handler: logstash over tcp
+			slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{}), // then to second handler: stderr
+		),
+	)
+	slog.SetDefault(logger)
 	cmd.Execute()
 }