Command `:show bindings` throws exception for bindings without `let`
The command `:show bindings` works for `let a = 1`:
```hs
Prelude> let a = 1
Prelude> :show bindings
a :: Num p => p = _
```
But not for `a = 1`:
```hs
Prelude> a = 1
Prelude> :show bindings
ghc-stage2.exe: ^^ Could not load 'interactive_Ghci1_zdtrModule2_closure', dependency unresolved. See top entry above.
ghc-stage2.exe: ^^ Could not load 'interactive_Ghci1_zdtrModule4_closure', dependency unresolved. See top entry above.
$trModule :: GHC.Types.Module = _
$trModule1 :: GHC.Types.TrName = _
$trModule2 ::
GHC.Prim.Addr# = *** Exception:
ByteCodeLink.lookupCE
During interactive linking, GHCi couldn't find the following symbol:
interactive_Ghci1_zdtrModule2_closure
This may be due to you not asking GHCi to load extra object files,
archives or DLLs needed by your current session. Restart GHCi, specifying
the missing library using the -L/path/to/object/dir and -lmissinglibname
flags, or simply by naming the relevant files on the GHCi command line.
Alternatively, this link failure might indicate a bug in GHCi.
If you suspect the latter, please send a bug report to:
glasgow-haskell-bugs@haskell.org
$trModule3 :: GHC.Types.TrName = _
$trModule4 ::
GHC.Prim.Addr# = *** Exception:
ByteCodeLink.lookupCE
During interactive linking, GHCi couldn't find the following symbol:
interactive_Ghci1_zdtrModule4_closure
This may be due to you not asking GHCi to load extra object files,
archives or DLLs needed by your current session. Restart GHCi, specifying
the missing library using the -L/path/to/object/dir and -lmissinglibname
flags, or simply by naming the relevant files on the GHCi command line.
Alternatively, this link failure might indicate a bug in GHCi.
If you suspect the latter, please send a bug report to:
glasgow-haskell-bugs@haskell.org
a :: Num p => p = _
a1 :: Integer = _
```
<details><summary>Trac metadata</summary>
| Trac field | Value |
| ---------------------- | ------------ |
| Version | 8.6.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | high |
| Resolution | Unresolved |
| Component | GHCi |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture | |
</details>
<!-- {"blocked_by":[],"summary":"Command `:show bindings` throws exception for bindings without `let`","status":"New","operating_system":"","component":"GHCi","related":[],"milestone":"","resolution":"Unresolved","owner":{"tag":"Unowned"},"version":"8.6.1","keywords":[],"differentials":[],"test_case":"","architecture":"","cc":[""],"type":"Bug","description":"The command `:show bindings` works for `let a = 1`:\r\n\r\n{{{#!hs\r\nPrelude> let a = 1\r\nPrelude> :show bindings\r\na :: Num p => p = _\r\n}}}\r\n\r\nBut not for `a = 1`:\r\n\r\n{{{#!hs\r\nPrelude> a = 1\r\nPrelude> :show bindings\r\nghc-stage2.exe: ^^ Could not load 'interactive_Ghci1_zdtrModule2_closure', dependency unresolved. See top entry above.\r\n\r\nghc-stage2.exe: ^^ Could not load 'interactive_Ghci1_zdtrModule4_closure', dependency unresolved. See top entry above.\r\n\r\n$trModule :: GHC.Types.Module = _\r\n$trModule1 :: GHC.Types.TrName = _\r\n$trModule2 ::\r\n GHC.Prim.Addr# = *** Exception:\r\nByteCodeLink.lookupCE\r\nDuring interactive linking, GHCi couldn't find the following symbol:\r\n interactive_Ghci1_zdtrModule2_closure\r\nThis may be due to you not asking GHCi to load extra object files,\r\narchives or DLLs needed by your current session. Restart GHCi, specifying\r\nthe missing library using the -L/path/to/object/dir and -lmissinglibname\r\nflags, or simply by naming the relevant files on the GHCi command line.\r\nAlternatively, this link failure might indicate a bug in GHCi.\r\nIf you suspect the latter, please send a bug report to:\r\n glasgow-haskell-bugs@haskell.org\r\n\r\n$trModule3 :: GHC.Types.TrName = _\r\n$trModule4 ::\r\n GHC.Prim.Addr# = *** Exception:\r\nByteCodeLink.lookupCE\r\nDuring interactive linking, GHCi couldn't find the following symbol:\r\n interactive_Ghci1_zdtrModule4_closure\r\nThis may be due to you not asking GHCi to load extra object files,\r\narchives or DLLs needed by your current session. Restart GHCi, specifying\r\nthe missing library using the -L/path/to/object/dir and -lmissinglibname\r\nflags, or simply by naming the relevant files on the GHCi command line.\r\nAlternatively, this link failure might indicate a bug in GHCi.\r\nIf you suspect the latter, please send a bug report to:\r\n glasgow-haskell-bugs@haskell.org\r\n\r\na :: Num p => p = _\r\na1 :: Integer = _\r\n}}}","type_of_failure":"OtherFailure","blocking":[]} -->
issue