diff --git a/cmd/hclspecsuite/runner.go b/cmd/hclspecsuite/runner.go
index 9e48f96..db9b13f 100644
--- a/cmd/hclspecsuite/runner.go
+++ b/cmd/hclspecsuite/runner.go
@@ -11,6 +11,7 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/zclconf/go-cty-debug/ctydebug"
 	"github.com/zclconf/go-cty/cty"
 	"github.com/zclconf/go-cty/cty/convert"
 	ctyjson "github.com/zclconf/go-cty/cty/json"
@@ -226,8 +227,9 @@ func (r *Runner) runTestInput(specFilename, inputFilename string, tf *TestFile)
 						Severity: hcl.DiagError,
 						Summary:  "Incorrect result value",
 						Detail: fmt.Sprintf(
-							"Input file %s produced %#v, but was expecting %#v.",
+							"Input file %s produced %#v, but was expecting %#v.\n\n%s",
 							inputFilename, val, tf.Result,
+							ctydebug.DiffValues(tf.Result, val),
 						),
 					})
 				}
diff --git a/go.mod b/go.mod
index 6900b55..0529faa 100644
--- a/go.mod
+++ b/go.mod
@@ -5,8 +5,6 @@ go 1.12
 require (
 	github.com/agext/levenshtein v1.2.1
 	github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3
-	github.com/apparentlymart/go-textseg v1.0.0 // indirect
-	github.com/apparentlymart/go-textseg/v12 v12.0.0 // indirect
 	github.com/apparentlymart/go-textseg/v13 v13.0.0
 	github.com/davecgh/go-spew v1.1.1
 	github.com/go-test/deep v1.0.3
@@ -18,10 +16,8 @@ require (
 	github.com/sergi/go-diff v1.0.0
 	github.com/spf13/pflag v1.0.2
 	github.com/stretchr/testify v1.2.2 // indirect
-	github.com/vmihailenco/msgpack v3.3.3+incompatible // indirect
 	github.com/zclconf/go-cty v1.8.0
+	github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b
 	golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734
-	golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect
 	golang.org/x/sys v0.0.0-20190502175342-a43fa875dd82 // indirect
-	golang.org/x/text v0.3.5 // indirect
 )
diff --git a/go.sum b/go.sum
index d6198c3..6c14756 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,6 @@ github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3 h1:ZSTrOEhi
 github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3/go.mod h1:oL81AME2rN47vu18xqj1S1jPIPuN7afo62yKTNn3XMM=
 github.com/apparentlymart/go-textseg v1.0.0 h1:rRmlIsPEEhUTIKQb7T++Nz/A5Q6C9IuX2wFoYVvnCs0=
 github.com/apparentlymart/go-textseg v1.0.0/go.mod h1:z96Txxhf3xSFMPmb5X/1W05FF/Nj9VFpLOpjS5yuumk=
-github.com/apparentlymart/go-textseg/v12 v12.0.0 h1:bNEQyAGak9tojivJNkoqWErVCQbjdL7GzRt3F8NvfJ0=
-github.com/apparentlymart/go-textseg/v12 v12.0.0/go.mod h1:S/4uRK2UtaQttw1GenVJEynmyUenKwP++x/+DdGV/Ec=
 github.com/apparentlymart/go-textseg/v13 v13.0.0 h1:Y+KvPE1NYz0xl601PVImeQfFyEy6iT90AvPUL1NNfNw=
 github.com/apparentlymart/go-textseg/v13 v13.0.0/go.mod h1:ZK2fH7c4NqDTLtiYLvIkEghdlcqw7yxLeM89kiTRPUo=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -37,10 +35,11 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 github.com/vmihailenco/msgpack v3.3.3+incompatible/go.mod h1:fy3FlTQTDXWkZ7Bh6AcGMlsjHatGryHQYUTf1ShIgkk=
 github.com/vmihailenco/msgpack/v4 v4.3.12/go.mod h1:gborTTJjAo/GWTqqRjrLCn9pgNN+NXzzngzBKDPIqw4=
 github.com/vmihailenco/tagparser v0.1.1/go.mod h1:OeAg3pn3UbLjkWt+rN9oFYB6u/cQgqMEUPoW2WPyhdI=
-github.com/zclconf/go-cty v1.2.0 h1:sPHsy7ADcIZQP3vILvTjrh74ZA175TFP5vqiNK1UmlI=
 github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
 github.com/zclconf/go-cty v1.8.0 h1:s4AvqaeQzJIu3ndv4gVIhplVD0krU+bgrcLSVUnaWuA=
 github.com/zclconf/go-cty v1.8.0/go.mod h1:vVKLxnk3puL4qRAv72AO+W99LUD4da90g3uUAzyuvAk=
+github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b h1:FosyBZYxY34Wul7O/MSKey3txpPYyCqVO5ZyceuQJEI=
+github.com/zclconf/go-cty-debug v0.0.0-20191215020915-b22d67c1ba0b/go.mod h1:ZRKQfBXbGkpdV6QMzT3rU1kSTAnfu1dO8dPKjYprgj8=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734 h1:p/H982KKEjUnLJkM3tt/LemDnOc1GiZL5FCVlORJ5zo=
 golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
@@ -53,14 +52,11 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502175342-a43fa875dd82 h1:vsphBvatvfbhlb4PO1BYSr9dzugGxJ/SQHoNufZJq1w=
 golang.org/x/sys v0.0.0-20190502175342-a43fa875dd82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.5 h1:i6eZZ+zk0SOf0xgBpEpPD18qWcJda6q1sxt3S0kzyUQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/specsuite/tests/expressions/operators.hcldec b/specsuite/tests/expressions/operators.hcldec
index a759517..e88a3c6 100644
--- a/specsuite/tests/expressions/operators.hcldec
+++ b/specsuite/tests/expressions/operators.hcldec
@@ -3,19 +3,19 @@ object {
     labels = ["operator"]
 
     object {
-      attr "exactly" { type = any }
-      attr "not" { type = any }
-      attr "type_mismatch_number" { type = any }
-      attr "type_mismatch_bool" { type = any }
+      attr "exactly" { type = bool }
+      attr "not" { type = bool }
+      attr "type_mismatch_number" { type = bool }
+      attr "type_mismatch_bool" { type = bool }
     }
   }
   block_map "inequality" {
     labels = ["operator"]
 
     object {
-      attr "lt" { type = any }
-      attr "gt" { type = any }
-      attr "eq" { type = any }
+      attr "lt" { type = bool }
+      attr "gt" { type = bool }
+      attr "eq" { type = bool }
     }
   }
   block "arithmetic" {
@@ -34,18 +34,18 @@ object {
     labels = ["operator"]
 
     object {
-      attr "tt" { type = any }
-      attr "ft" { type = any }
-      attr "tf" { type = any }
-      attr "ff" { type = any }
+      attr "tt" { type = bool }
+      attr "ft" { type = bool }
+      attr "tf" { type = bool }
+      attr "ff" { type = bool }
     }
   }
   block_map "logical_unary" {
     labels = ["operator"]
 
     object {
-      attr "t"   { type = any }
-      attr "f"   { type = any }
+      attr "t"   { type = bool }
+      attr "f"   { type = bool }
     }
   }
   block "conditional" {
diff --git a/specsuite/tests/expressions/operators.t b/specsuite/tests/expressions/operators.t
index 9668468..944e513 100644
--- a/specsuite/tests/expressions/operators.t
+++ b/specsuite/tests/expressions/operators.t
@@ -43,7 +43,7 @@ result = {
     mul      = 9
     div      = 0.1
     mod      = 1
-    mod_frac = 0.8000000000000000002
+    mod_frac = 0.80000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000024
   }
   logical_binary = {
     "&&" = {