1OPAM-PIN(1)                       Opam Manual                      OPAM-PIN(1)
2
3
4

NAME

6       opam-pin - Pin a given package to a specific version or source.
7

SYNOPSIS

9       opam pin [OPTION]... [COMMAND] [ARG]...
10

DESCRIPTION

12       This command allows local customisation of the packages in a given
13       switch. A pinning can either just enforce a given version, or provide a
14       local, editable version of the definition of the package. It is also
15       possible to create a new package just by pinning a non-existing package
16       name.
17
18       Any customisation is available through the edit subcommand, but the
19       command-line gives facility for altering the source URL of the package,
20       since it is the most common use: opam pin add PKG URL modifies package
21       PKG to fetch its source from URL. If a package definition is found in
22       the package's source tree, it will be used locally.
23
24       If (or -) is specified, the package is pinned without a source archive.
25       The package name can be omitted if the target is a directory containing
26       one or more valid package definitions (this allows one to do e.g. opam
27       pin add . from a source directory.
28
29       If PACKAGE has the form name.version, the pinned package will be
30       considered as version version by opam. Beware that this doesn't relate
31       with the version of the source actually used for the package. See also
32       the --with-version option.
33
34       The default subcommand is list if there are no further arguments, and
35       add otherwise if unambiguous.
36

COMMANDS

38       Without argument, defaults to list.
39
40       list
41           Lists pinned packages.
42
43       scan DIR
44           Lists available packages to pin in directory.
45
46       add PACKAGE TARGET
47           Pins package PACKAGE to TARGET, which may be a version, a path, or
48           a URL. PACKAGE can be omitted if TARGET contains one or more
49           package descriptions. TARGET can be replaced by --dev-repo if a
50           package by that name is already known. If TARGET is -, the package
51           is pinned as a virtual package, without any source. opam will infer
52           the kind of pinning from the format (and contents, if local) of
53           TARGET, Use --kind or an explicit URL to disable that behaviour.
54           Pins to version control systems may target a specific branch or
55           commit using #branch e.g. git://host/me/pkg#testing. If PACKAGE is
56           not a known package name, a new package by that name will be
57           locally created. For source pinnings, the package version may be
58           specified by using the format NAME.VERSION for PACKAGE, in the
59           source opam file, or with edit.
60
61       remove NAMES...|TARGET
62           Unpins packages NAMES, restoring their definition from the
63           repository, if any. With a TARGET, unpins everything that is
64           currently pinned to that target.
65
66       edit NAME
67           Opens an editor giving you the opportunity to change the package
68           definition that opam will locally use for package NAME, including
69           its version and source URL. Using the format NAME.VERSION will
70           update the version in the opam file in advance of editing, without
71           changing the actual target. The chosen editor is determined from
72           environment variables OPAM_EDITOR, VISUAL or EDITOR, in order.
73

OPTIONS

75       --dev-repo
76           Pin to the upstream package source for the latest development
77           version
78
79       -e, --edit
80           With opam pin add, edit the opam file as with `opam pin edit' after
81           pinning.
82
83       -j JOBS, --jobs=JOBS
84           Set the maximal number of concurrent jobs to use. The default value
85           is calculated from the number of cores. You can also set it using
86           the $OPAMJOBS environment variable.
87
88       -k KIND, --kind=KIND
89           Sets the kind of pinning. Must be one of one of `version', `path',
90           `http', `git', `darcs', `hg', `none' or `auto'. If unset or auto,
91           is inferred from the format of the target, defaulting to the
92           appropriate version control if one is detected in the given
93           directory, or to path otherwise. OPAMPINKINDAUTO can be set to "0"
94           to disable automatic detection of version control.Use none to pin
95           without a target (for virtual packages).
96
97       -n, --no-action
98           Just record the new pinning status, and don't prompt for
99           (re)installation or removal of affected packages.
100
101       --no
102           Answer no to all opam yes/no questions without prompting. See also
103           --confirm-level. This is equivalent to setting $OPAMNO to "true".
104
105       --normalise
106           Print list of available package to pin in format
107           `name.version^url`, that is comprehensible by `opam pin add`.
108           Available only with the scan subcommand. An example of use is `opam
109           pin scan . --normalise | grep foo | xargs opam pin add`
110
111       -s, --short
112           Output raw lists of names, one per line, skipping any details.
113
114       --with-version=VERSION
115           Set the pinning version to VERSION for named PACKAGES or packages
116           retrieved from TARGET. It has priority over any other version
117           specification (opam file version field, name.vers argument)). When
118           pinning to a version, the package source from that version is used,
119           but declared as being VERSION to opam. Using --with-version is
120           equivalent to using --edit and adjusting the version in the package
121           definition file.
122
123       -y, --yes
124           Answer yes to all opam yes/no questions without prompting. See also
125           --confirm-level. This is equivalent to setting $OPAMYES to "true".
126

PACKAGE BUILD OPTIONS

128       --assume-depexts
129           Skip the installation step for any missing system packages, and
130           attempt to proceed with compilation of the opam packages anyway. If
131           the installation is successful, opam won't prompt again about these
132           system packages. Only meaningful if external dependency handling is
133           enabled.
134
135       -b, --keep-build-dir
136           Keep the build directories after compiling packages. This is
137           equivalent to setting $OPAMKEEPBUILDDIR to "true".
138
139       --build-doc
140           Removed in 2.1, use --with-doc instead.
141
142       --build-test
143           Removed in 2.1, use --with-test instead.
144
145       -d, --with-doc
146           Build the package documentation. This only affects packages listed
147           on the command-line. This is equivalent to setting $OPAMWITHDOC (or
148           the deprecated $OPAMBUILDDOC) to "true".
149
150       --dry-run
151           Simulate the command, but don't actually perform any changes. This
152           also can be set with environment variable $OPAMDEBUG.
153
154       --fake
155           This option registers the actions into the opam database, without
156           actually performing them. WARNING: This option is dangerous and
157           likely to break your opam environment. You probably want --dry-run.
158           You've been warned.
159
160       --ignore-constraints-on[=PACKAGES] (default=)
161           Forces opam to ignore version constraints on all dependencies to
162           the listed packages. This can be used to test compatibility, but
163           expect builds to break when using this. Note that version
164           constraints on optional dependencies and conflicts are unaffected.
165           This is equivalent to setting $OPAMIGNORECONSTRAINTS.
166
167       --inplace-build
168           When compiling a package which has its source bound to a local
169           directory, process the build and install actions directly in that
170           directory, rather than in a clean copy handled by opam. This only
171           affects packages that are explicitly listed on the command-line.
172           This is equivalent to setting $OPAMINPLACEBUILD to "true".
173
174       --lock-suffix=SUFFIX (absent=locked)
175           Set locked files suffix to SUFFIX.
176
177       --locked
178           In commands that use opam files found from pinned sources, if a
179           variant of the file with an added .locked extension is found (e.g.
180           foo.opam.locked besides foo.opam), that will be used instead. This
181           is typically useful to offer a more specific set of dependencies
182           and reproduce similar build contexts, hence the name. The
183           lockoption can be used to generate such files, based on the
184           versions of the dependencies currently installed on the host. This
185           is equivalent to setting the $OPAMLOCKED environment variable. Note
186           that this option doesn't generally affect already pinned packages.
187
188       -m MAKE, --make=MAKE
189           Removed in 2.1, use opam config set[-global] make MAKE instead.
190
191       --no-checksums
192           Do not verify the checksum of downloaded archives.This is
193           equivalent to setting $OPAMNOCHECKSUMS to "true".
194
195       --no-depexts
196           Temporarily disables handling of external dependencies. This can be
197           used if a package is not available on your system package manager,
198           but you installed the required dependency by hand. Implies
199           --assume-depexts, and stores the exceptions upon success as well.
200
201       --require-checksums
202           Reject the installation of packages that don't provide a checksum
203           for the upstream archives. This is equivalent to setting
204           $OPAMREQUIRECHECKSUMS to "true".
205
206       --reuse-build-dir
207           Reuse existing build directories (kept by using --keep-build-dir),
208           instead of compiling from a fresh clone of the source. This can be
209           faster, but also lead to failures if the build systems of the
210           packages don't handle upgrades of dependencies well. This is
211           equivalent to setting $OPAMREUSEBUILDDIR to "true".
212
213       --show-actions
214           Call the solver and display the actions. Don't perform any changes.
215           This is equivalent to setting $OPAMSHOW.
216
217       --skip-updates
218           When running an install, upgrade or reinstall on source-pinned
219           packages, they are normally updated from their origin first. This
220           flag disables that behaviour and will keep them to their version in
221           cache. This is equivalent to setting $OPAMSKIPUPDATE.
222
223       -t, --with-test
224           Build and run the package unit-tests. This only affects packages
225           listed on the command-line. This is equivalent to setting
226           $OPAMWITHTEST (or the deprecated $OPAMBUILDTEST) to "true".
227
228       --unlock-base
229           Removed in 2.1, use --update-invariant instead.
230
231       --update-invariant
232           Allow changes to the packages set as switch base (typically, the
233           main compiler). Use with caution. This is equivalent to setting the
234           $OPAMUNLOCKBASE environment variable
235

COMMON OPTIONS

237       These options are common to all commands.
238
239       --best-effort
240           Don't fail if all requested packages can't be installed: try to
241           install as many as possible. Note that not all external solvers may
242           support this option (recent versions of aspcud or mccs should).
243           This is equivalent to setting $OPAMBESTEFFORT environment variable.
244
245       --cli=MAJOR.MINOR (absent=2.1)
246           Use the command-line interface syntax and semantics of MAJOR.MINOR.
247           Intended for any persistent use of opam (scripts, blog posts,
248           etc.), any version of opam in the same MAJOR series will behave as
249           for the specified MINOR release. The flag was not available in opam
250           2.0, so to select the 2.0 CLI, set the OPAMCLI environment variable
251           to 2.0 instead of using this parameter.
252
253       --color=WHEN
254           Colorize the output. WHEN must be one of `always', `never' or
255           `auto'.
256
257       --confirm-level=LEVEL
258           Confirmation level, LEVEL must be one of `ask', `no', `yes' or
259           `unsafe-yes'. Can be specified more than once. If --yes or --no are
260           also given, the value of the last --confirm-level is taken into
261           account. This is equivalent to setting  $OPAMCONFIRMLEVEL`.
262
263       --criteria=CRITERIA
264           Specify user preferences for dependency solving for this run.
265           Overrides both $OPAMCRITERIA and $OPAMUPGRADECRITERIA. For details
266           on the supported language, and the external solvers available, see
267           http://opam.ocaml.org/doc/External_solvers.html. A general guide to
268           using solver preferences can be found at
269           http://www.dicosmo.org/Articles/usercriteria.pdf.
270
271       --cudf=FILENAME
272           Debug option: Save the CUDF requests sent to the solver to
273           FILENAME-<n>.cudf.
274
275       --debug
276           Print debug message to stderr. This is equivalent to setting
277           $OPAMDEBUG to "true".
278
279       --debug-level=LEVEL
280           Like --debug, but allows specifying the debug level (--debug sets
281           it to 1). Equivalent to setting $OPAMDEBUG to a positive integer.
282
283       --git-version
284           Print the git version of opam, if set (i.e. you are using a
285           development version), and exit.
286
287       --help[=FMT] (default=auto)
288           Show this help in format FMT. The value FMT must be one of `auto',
289           `pager', `groff' or `plain'. With `auto', the format is `pager` or
290           `plain' whenever the TERM env var is `dumb' or undefined.
291
292       --ignore-pin-depends
293           Ignore extra pins required by packages that get pinned, either
294           manually through opam pin or through opam install DIR. This is
295           equivalent to setting IGNOREPINDEPENDS=true.
296
297       --json=FILENAME
298           Save the results of the opam run in a computer-readable file. If
299           the filename contains the character `%', it will be replaced by an
300           index that doesn't overwrite an existing file. Similar to setting
301           the $OPAMJSON variable.
302
303       --no-aspcud
304           Removed in 2.1.
305
306       --no-auto-upgrade
307           When configuring or updating a repository that is written for an
308           earlier opam version (1.2), opam internally converts it to the
309           current format. This disables this behaviour. Note that
310           repositories should define their format version in a 'repo' file at
311           their root, or they will be assumed to be in the older format. It
312           is, in any case, preferable to upgrade the repositories manually
313           using opam admin upgrade [--mirror URL] when possible.
314
315       --no-self-upgrade
316           Opam will replace itself with a newer binary found at OPAMROOT/opam
317           if present. This disables this behaviour.
318
319       -q, --quiet
320           Disables --verbose.
321
322       --root=ROOT
323           Use ROOT as the current root path. This is equivalent to setting
324           $OPAMROOT to ROOT.
325
326       --safe, --readonly
327           Make sure nothing will be automatically updated or rewritten.
328           Useful for calling from completion scripts, for example. Will fail
329           whenever such an operation is needed ; also avoids waiting for
330           locks, skips interactive questions and overrides the $OPAMDEBUG
331           variable. This is equivalent to set environment variable $OPAMSAFE.
332
333       --solver=CMD
334           Specify the CUDF solver to use for resolving package installation
335           problems. This is either a predefined solver (this version of opam
336           supports builtin-mccs+lp(), builtin-mccs+glpk,
337           builtin-dummy-z3-solver, builtin-dummy-0install-solver, aspcud,
338           mccs, aspcud-old, packup), or a custom command that should contain
339           the variables %{input}%, %{output}%, %{criteria}%, and optionally
340           %{timeout}%. This is equivalent to setting $OPAMEXTERNALSOLVER.
341
342       --strict
343           Fail whenever an error is found in a package definition or a
344           configuration file. The default is to continue silently if
345           possible.
346
347       --switch=SWITCH
348           Use SWITCH as the current compiler switch. This is equivalent to
349           setting $OPAMSWITCH to SWITCH.
350
351       --use-internal-solver
352           Disable any external solver, and use the built-in one (this
353           requires that opam has been compiled with a built-in solver). This
354           is equivalent to setting $OPAMNOASPCUD or $OPAMUSEINTERNALSOLVER.
355
356       -v, --verbose
357           Be more verbose. One -v shows all package commands, repeat to also
358           display commands called internally (e.g. tar, curl, patch etc.)
359           Repeating n times is equivalent to setting $OPAMVERBOSE to "n".
360
361       --version
362           Show version information.
363
364       -w, --working-dir
365           Whenever updating packages that are bound to a local,
366           version-controlled directory, update to the current working state
367           of their source instead of the last committed state, or the ref
368           they are pointing to. As source directory is copied as it is, if it
369           isn't clean it may result on a opam build failure.This only affects
370           packages explicitly listed on the command-line.It can also be set
371           with $OPAMWORKINGDIR.
372

ENVIRONMENT

374       Opam makes use of the environment variables listed here. Boolean
375       variables should be set to "0", "no", "false" or the empty string to
376       disable, "1", "yes" or "true" to enable.
377
378       OPAMALLPARENS surround all filters with parenthesis.
379
380       OPAMASSUMEDEPEXTS see option `--assume-depexts'.
381
382       OPAMAUTOREMOVE see remove option `--auto-remove'.
383
384       OPAMBESTEFFORT see option `--best-effort'.
385
386       OPAMBESTEFFORTPREFIXCRITERIA sets the string that must be prepended to
387       the criteria when the `--best-effort' option is set, and is expected to
388       maximise the `opam-query' property in the solution.
389
390       OPAMBUILDDOC Removed in 2.1.
391
392       OPAMBUILDTEST Removed in 2.1.
393
394       OPAMCLI see option `--cli'.
395
396       OPAMCOLOR when set to always or never, sets a default value for the
397       `--color' option.
398
399       OPAMCONFIRMLEVEL see option `--confirm-level`. OPAMCONFIRMLEVEL has
400       priority over OPAMYES and OPAMNO.
401
402       OPAMCRITERIA specifies user preferences for dependency solving. The
403       default value depends on the solver version, use `config report' to
404       know the current setting. See also option --criteria.
405
406       OPAMCUDFFILE save the cudf graph to file-actions-explicit.dot.
407
408       OPAMCUDFTRIM controls the filtering of unrelated packages during CUDF
409       preprocessing.
410
411       OPAMCURL can be used to select a given 'curl' program. See OPAMFETCH
412       for more options.
413
414       OPAMDEBUG see options `--debug' and `--debug-level'.
415
416       OPAMDEBUGSECTIONS if set, limits debug messages to the space-separated
417       list of sections. Sections can optionally have a specific debug level
418       (for example, CLIENT:2 or CLIENT CUDF:2), but otherwise use
419       `--debug-level'.
420
421       OPAMDIGDEPTH defines how aggressive the lookup for conflicts during
422       CUDF preprocessing is.
423
424       OPAMDOWNLOADJOBS sets the maximum number of simultaneous downloads.
425
426       OPAMDROPWORKINGDIR overrides packages previously updated with
427       --working-dir on update. Without this variable set, opam would keep
428       them unchanged unless explicitly named on the command-line.
429
430       OPAMDRYRUN see option `--dry-run'.
431
432       OPAMEDITOR sets the editor to use for opam file editing, overrides
433       $EDITOR and $VISUAL.
434
435       OPAMERRLOGLEN sets the number of log lines printed when a sub-process
436       fails. 0 to print all.
437
438       OPAMEXTERNALSOLVER see option `--solver'.
439
440       OPAMFAKE see option `--fake'.
441
442       OPAMFETCH specifies how to download files: either `wget', `curl' or a
443       custom command where variables %{url}%, %{out}%, %{retry}%,
444       %{compress}% and %{checksum}% will be replaced. Overrides the
445       'download-command' value from the main config file.
446
447       OPAMFIXUPCRITERIA same as OPAMUPGRADECRITERIA, but specific to fixup.
448
449       OPAMIGNORECONSTRAINTS see install option `--ignore-constraints-on'.
450
451       OPAMIGNOREPINDEPENDS see option `--ignore-pin-depends'.
452
453       OPAMINPLACEBUILD see option `--inplace-build'.
454
455       OPAMJOBS sets the maximum number of parallel workers to run.
456
457       OPAMJSON log json output to the given file (use character `%' to index
458       the files).
459
460       OPAMKEEPBUILDDIR see install option `--keep-build-dir'.
461
462       OPAMKEEPLOGS tells opam to not remove some temporary command logs and
463       some backups. This skips some finalisers and may also help to get more
464       reliable backtraces.
465
466       OPAMLOCKED combination of `--locked' and `--lock-suffix' options.
467
468       OPAMLOGS logdir sets log directory, default is a temporary directory in
469       /tmp
470
471       OPAMMAKECMD set the system make command to use.
472
473       OPAMMERGEOUT merge process outputs, stderr on stdout.
474
475       OPAMNO answer no to any question asked, see options `--no` and
476       `--confirm-level`. OPAMNO is ignored if either OPAMCONFIRMLEVEL or
477       OPAMYES is set.
478
479       OPAMNOAGGREGATE with `opam admin check', don't aggregate packages.
480
481       OPAMNOASPCUD Deprecated.
482
483       OPAMNOAUTOUPGRADE disables automatic internal upgrade of repositories
484       in an earlier format to the current one, on 'update' or 'init'.
485
486       OPAMNOCHECKSUMS enables option --no-checksums when available.
487
488       OPAMNODEPEXTS disables system dependencies handling, see option
489       `--no-depexts'.
490
491       OPAMNOENVNOTICE Internal.
492
493       OPAMNOSELFUPGRADE see option `--no-self-upgrade'
494
495       OPAMPINKINDAUTO sets whether version control systems should be detected
496       when pinning to a local path. Enabled by default since 1.3.0.
497
498       OPAMPRECISETRACKING fine grain tracking of directories.
499
500       OPAMPREPRO set this to false to disable CUDF preprocessing. Less
501       efficient, but might help debugging solver issue.
502
503       OPAMREQUIRECHECKSUMS Enables option `--require-checksums' when
504       available (e.g. for `opam install').
505
506       OPAMRETRIES sets the number of tries before failing downloads.
507
508       OPAMREUSEBUILDDIR see option `--reuse-build-dir'.
509
510       OPAMROOT see option `--root'. This is automatically set by `opam env
511       --root=DIR --set-root'.
512
513       OPAMROOTISOK don't complain when running as root.
514
515       OPAMSAFE see option `--safe'.
516
517       OPAMSHOW see option `--show'.
518
519       OPAMSKIPUPDATE see option `--skip-updates'.
520
521       OPAMSKIPVERSIONCHECKS bypasses some version checks. Unsafe, for
522       compatibility testing only.
523
524       OPAMSOLVERALLOWSUBOPTIMAL (default `true') allows some solvers to still
525       return a solution when they reach timeout; while the solution remains
526       assured to be consistent, there is no guarantee in this case that it
527       fits the expected optimisation criteria. If `true', opam willcontinue
528       with a warning, if `false' a timeout is an error. Currently only the
529       builtin-z3 backend handles this degraded case.
530
531       OPAMSOLVERTIMEOUT change the time allowance of the solver. Default is
532       60.0, set to 0 for unlimited. Note that all solvers may not support
533       this option.
534
535       OPAMSTATS display stats at the end of command.
536
537       OPAMSTATUSLINE display a dynamic status line showing what's currently
538       going on on the terminal. (one of one of `always', `never' or `auto')
539
540       OPAMSTRICT fail on inconsistencies (file reading, switch import, etc.).
541
542       OPAMSWITCH see option `--switch'. Automatically set by `opam env
543       --switch=SWITCH --set-switch'.
544
545       OPAMUNLOCKBASE see install option `--unlock-base'.
546
547       OPAMUPGRADECRITERIA specifies user preferences for dependency solving
548       when performing an upgrade. Overrides OPAMCRITERIA in upgrades if both
549       are set. See also option --criteria.
550
551       OPAMUSEINTERNALSOLVER see option `--use-internal-solver'.
552
553       OPAMUSEOPENSSL force openssl use for hash computing.
554
555       OPAMUTF8 use UTF8 characters in output (one of one of `always', `never'
556       or `auto'). By default `auto', which is determined from the locale).
557
558       OPAMUTF8MSGS use extended UTF8 characters (camels) in opam messages.
559       Implies OPAMUTF8. This is set by default on OSX only.
560
561       OPAMVALIDATIONHOOK if set, uses the `%{hook%}' command to validate an
562       opam repository update.
563
564       OPAMVERBOSE see option `--verbose'.
565
566       OPAMVERSIONLAGPOWER do not use.
567
568       OPAMWITHDOC see install option `--with-doc'.
569
570       OPAMWITHTEST see install option `--with-test.
571
572       OPAMWORKINGDIR see option `--working-dir'.
573
574       OPAMYES see options `--yes' and `--confirm-level`. OPAMYES has has
575       priority over OPAMNO and is ignored if OPAMCONFIRMLEVEL is set.
576
577       OPAMVAR_var overrides the contents of the variable var when
578       substituting `%{var}%` strings in `opam` files.
579
580       OPAMVAR_package_var overrides the contents of the variable package:var
581       when substituting `%{package:var}%` strings in `opam` files.
582

CLI VERSION

584       All scripts and programmatic invocations of opam should use `--cli' in
585       order to ensure that they work seamlessly with future versions of the
586       opam client. Additionally, blog posts or other documentation can
587       benefit, as it prevents information from becoming stale.
588
589       Although opam only supports roots (~/.opam/) for the current version,
590       it does provide backwards compatibility for its command-line interface.
591
592       Since CLI version support was only added in opam 2.1, use OPAMCLI to
593       select 2.0 support (as opam 2.0 will just ignore it), and `--cli=2.1'
594       for 2.1 (or later) versions, since an environment variable controlling
595       the parsing of syntax is brittle. To this end, opam displays a warning
596       if OPAMCLI specifies a valid version other than 2.0, and also if
597       `--cli=2.0' is specified.
598
599       The command-line version is selected by using the `--cli' option or the
600       OPAMCLI environment variable. `--cli' may be specified morethan once,
601       where the last instance takes precedence. OPAMCLI is only inspected if
602       `--cli' is not given.
603

EXIT STATUS

605       As an exception to the following, the `exec' command returns 127 if the
606       command was not found or couldn't be executed, and the command's exit
607       value otherwise.
608
609       0   Success, or true for boolean queries.
610
611       1   False. Returned when a boolean return value is expected, e.g. when
612           running with --check, or for queries like opam lint.
613
614       2   Bad command-line arguments, or command-line arguments pointing to
615           an invalid context (e.g. file not following the expected format).
616
617       5   Not found. You requested something (package, version, repository,
618           etc.) that couldn't be found.
619
620       10  Aborted. The operation required confirmation, which wasn't given.
621
622       15  Could not acquire the locks required for the operation.
623
624       20  There is no solution to the user request. This can be caused by
625           asking to install two incompatible packages, for example.
626
627       30  Error in package definition, or other metadata files. Using
628           --strict raises this error more often.
629
630       31  Package script error. Some package operations were unsuccessful.
631           This may be an error in the packages or an incompatibility with
632           your system. This can be a partial error.
633
634       40  Sync error. Could not fetch some remotes from the network. This can
635           be a partial error.
636
637       50  Configuration error. Opam or system configuration doesn't allow
638           operation, and needs fixing.
639
640       60  Solver failure. The solver failed to return a sound answer. It can
641           be due to a broken external solver, or an error in solver
642           configuration.
643
644       99  Internal error. Something went wrong, likely due to a bug in opam
645           itself.
646
647       130 User interrupt. SIGINT was received, generally due to the user
648           pressing Ctrl-C.
649

FURTHER DOCUMENTATION

651       See https://opam.ocaml.org/doc.
652

AUTHORS

654       Vincent Bernardoff <vb@luminar.eu.org>
655       Raja Boujbel <raja.boujbel@ocamlpro.com>
656       Roberto Di Cosmo <roberto@dicosmo.org>
657       Thomas Gazagnaire <thomas@gazagnaire.org>
658       Louis Gesbert <louis.gesbert@ocamlpro.com>
659       Fabrice Le Fessant <Fabrice.Le_fessant@inria.fr>
660       Anil Madhavapeddy <anil@recoil.org>
661       Guillem Rieu <guillem.rieu@ocamlpro.com>
662       Ralf Treinen <ralf.treinen@pps.jussieu.fr>
663       Frederic Tuong <tuong@users.gforge.inria.fr>
664

BUGS

666       Check bug reports at https://github.com/ocaml/opam/issues.
667
668
669
670Opam 2.1.1                                                         OPAM-PIN(1)
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